experiments for science fair 7th grade

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50 Sensational 7th Grade Science Fair Projects and Classroom Activities

Mummification, oxidation, electroplating, and more!

Engage every student with these 7th grade science fair projects, whether they’re interested in biology, chemistry, physics, environmental science, or any other discipline. Plus, find interesting classroom demos, experiments, and hands-on activities to spice up your lesson plans!

To make it easier to find classroom activities or science fair ideas for 7th grade, we’ve rated all the projects by difficulty and the materials needed:

Difficulty:

• Easy: Low or no-prep experiments you can do pretty much anytime
• Medium: These take a little more setup or a longer time to complete
• Advanced: Experiments like these take a fairly big commitment of time or effort
• Basic: Simple items you probably already have around the house
• Medium: Items that you might not already have but are easy to get your hands on
• Advanced: These require specialized or more expensive supplies to complete

Biology and Ecology Science Fair Ideas for 7th Grade

Chemistry science fair ideas for 7th grade, physics and engineering science fair ideas for 7th grade, 7th grade science classroom demos, experiments, and hands-on activities.

Want to learn more about animals or human behavior, the environment around you, or other life science topics? Try these 7th grade science fair projects.

Learn whether color affects memory

Difficulty: Easy / Materials: Medium

Can certain colors improve your memory? This experiment explores that idea using different text, background colors, and blue light settings on devices.

Learn more: Colors and Memory at Education.com

Explore how sugary drinks affect teeth

Difficulty: Easy / Materials: Medium ADVERTISEMENT

The calcium content of eggshells makes them a great stand-in for teeth. In this experiment, students use eggs to determine how soda and juice stain the teeth and wear down the enamel. (Bonus: Have students try different toothpaste and toothbrush combinations to see how effective they are.)

Learn more: Eggshell Experiment at Feels Like Home

Extract DNA from an onion

Difficulty: Medium / Materials: Medium

Learn how to extract DNA from an onion (most of what you need you can find at home, and you can get 95% ethanol at Amazon ). Then, turn it into an experiment by applying the theory to other fruits or vegetables to see if you can get similar results.

Stretch your mind with a flexibility experiment

Difficulty: Medium / Materials: Basic

Find out how important stretching really is by comparing the flexibility of willing test subjects before and after stretch exercises. This is a great experiment for fitness fans.

Learn more: Flexibility Experiment at We Have Kids

Construct a DIY grow box

Design a grow box using a cardboard box, foil, and a plug-in light socket . Then, use it for all kinds of plant-based science fair ideas for 7th grade students.

Learn more: DIY Grow Box at Uplifting Mayhem

Collect and control biofilm

Bacteria that accumulate on objects in the water form a substance called biofilm. In this 7th grade science fair project, students build an apparatus to collect biofilm and then experiment with ways to reduce the amount of biofilm that accumulates over time.

Learn more: Biofilm Experiment at The Homeschool Scientist

See if caffeine helps you type faster

People seek out a jolt of caffeine when they’re feeling sluggish, but does it really help them perform better? This 7th grade science fair project tasks students with answering that question using the scientific method.

Find out if all plants are phototropic

You probably already know that many plants grow toward the light. But do all of them respond in the same way? Test several types of plants to find out.

Devise a water filtration system

Plenty of homes use water filtration systems these days, but how do they really work? This chemistry experiment explores how charcoal filters impurities from drinking water.

Learn more: Water Filtration at The Homeschool Scientist

Determine whether text abbreviations are a new language

Kids are fluent in text-speak, but does it really count as a whole new language? In this 7th grade science fair project, students research language and the history of texting, then compile a texting glossary and consider texting’s practical applications.

Learn more: Text Language at Education.com

If you’re fascinated by test tubes, beakers, and Bunsen burners, check out these interesting 7th grade science fair projects and ideas.

Design your own slime

Chances are good your students already love making and playing with slime. Turn the fun into an experiment by changing the ingredients to create slime with a variety of properties, from magnetic to glow-in-the-dark!

Copper-plate some coins

Students need just a few simple supplies to perform electroplating, but the results are always impressive. (Get copper strips  and 9V battery snap connectors with alligator clips on Amazon.) Turn this into a 7th grade science fair project by changing up the variables (does temperature matter?) or items being electroplated.

Learn more: Electroplating at KiwiCo

Swab and test for germs

Germ experiments are one of the most popular science fair ideas for 7th grade students. Swab household items, school supplies, and more to discover what’s living on the items around you.

Learn more: Germ Experiment at Angelic Scalliwags

Spherify your favorite beverage

Spherification is a hot trend in top restaurants, but 7th grade science students can easily replicate it at home with a spherification kit . This is a cool chemistry experiment, and tasty too!

Test calorie counts in packaged foods

Ever wonder how scientists determine how many calories are in your food? Try this experiment to find out!

Explore mummification

First, learn how to mummify a hot dog using baking soda as a desiccant. Then, experiment with other desiccants or items to turn this into a bona fide experiment.

Play around with oxidation

Can you find a way to slow or prevent oxidation (rusting)? This is one of those 7th grade science fair ideas that’s simple in concept but has lots of practical applications.

Learn more: Oxidation Experiment at Teach Beside Me

Blow hot or cold bubbles

Blowing bubbles may sound like too much fun for a science project, but when conditions like temperature are altered, the experimental part kicks in. What conditions do you need to blow a bubble that freezes?

Learn more:  Bubble Life & Temperature at ThoughtCo.

Whip up some eggshell chalk

Use the calcium in eggshells to make your own sidewalk chalk. Then, tinker with the recipe to see if you can make the chalk last longer, resist water, or other variables.

Learn more: DIY Chalk at Kidspot

See the effect of acid rain on plants

Difficulty: Easy / Materials: Basic

This simple project tests whether acid rain has any effect on plant life, using vinegar in place of fossil fuels. Experiment with different acid concentrations and pH levels for a more advanced version.

Learn more: Acid Rain Experiment at STEAM Powered Family

Explore the laws of motion, the science of energy, or STEM challenge engineering ideas through 7th grade science fair projects like these.

Drive a balloon-powered car

Engineer a balloon-powered car using basic materials from around the house (even the wheels are bottle caps!). Experiment to see how far or fast you can make the car go.

Learn more: Balloon Car at Prolab

Construct a geodesic dome

Budding engineers will love designing, building, and testing the strength of the fascinating geodesic dome. This experiment requires nothing more than newspaper and masking tape!

Design a solar oven

Students experiment with the best way to build a solar oven, exploring thermal energy, reflection, convection, and other physics concepts. They can serve up their experiment results along with their final reports!

Learn more: Solar Oven at Children’s Science Center

Lend a helping hand

This is a great individual or group 7th grade science project, as it encourages students to use and hone their design and engineering skills to make a working model of a hand. If you’ve got robotics skills, take this project to a more advanced level.

Build a Da Vinci bridge

There are plenty of bridge-building experiments out there, but this one is unique. It’s inspired by Leonardo da Vinci’s 500-year-old self-supporting wooden bridge. Build a model and test the amount of weight it can hold, or craft a full-size version to put Da Vinci’s plan into action.

Construct a water clock

You’ll blow your 7th grade science students’ minds when you tell them they’re going to build a clock using engineering that’s been around for thousands of years. The supplies are simple, but the results are pretty neat!

Learn more: Water Clock at STEAM Powered Family

Generate electricity

In this science fair project, kids build a generator from scratch. Turn it into an experiment by varying the materials to see if you can increase the amount of energy it produces.

Test the elasticity of balloons

Explore whether heat and cold have an effect on elasticity using balloons. Try this with other materials too to expand the project. ( Find more balloon science here! )

Freeze water in an instant

Explore the concept of nucleation (the process of chain reactions) by turning water into ice in seconds! Make this a 7th grade science fair project by trying the same process with other liquids.

Auto-feed your pet

Difficulty: Advanced / Materials: Advanced

Can you build a device that feeds your pets automatically? Even better, can you make it inexpensive and easy for others to build too? This project has real practical applications.

Use these classroom activities to teach human biology, mechanical engineering, and more physics and chemistry concepts in engaging and exciting ways.

Use Oreos to teach mitosis

A 7th grade science activity that doubles as a sweet treat? Your students are going to love this activity using Oreo cookies and colorful sprinkles to make cellular mitosis models.

Learn more: Oreo Mitosis at Ballin With Balling

Twist pipe cleaners to explore meiosis

Meiosis is similar to mitosis, but it’s specific to the production of gametes. These hands-on models use basic materials like pipe cleaners and beads to make the process easier to visualize.

Learn more: Meiosis Models at Science Prof Online

Teach about “Homer-o-stasis”

Difficulty: Medium / Materials: Advanced

This is such a fun way to teach kids about the concept of homeostasis! Get all the instructions you need at the link.

Learn more: Homer-o-stasis at The Trendy Science Teacher

Sort jelly beans to learn genetics

If you’re learning about how genetic traits are passed along from parent to child, try this jelly-bean demo. When you’re finished, you can enjoy a sweet treat!

Learn more: Jelly Bean Genetics at The Owl Teacher

Design a pinball machine

Give your class basic supplies like rubber bands, plastic cups, and cardboard boxes. Then challenge them to create their very own pinball machines!

Learn more: Pinball STEM Challenge at Student Savvy

Conduct a carbon cycle lab activity

If you’ve got access to some basic chemicals, conduct this lab that helps students see the carbon cycle in action using their own breath.

Learn more: Science Lessons That Rock

Make a tea bag float on air

This easy experiment is a cool way to show kids how heat affects air molecules, making hot air rise. They’ll need some supervision with the fire, so try this out on the playground for extra safety.

Learn more: Floating Tea Bags at Coffee Cups and Crayons

Learn how salt affects density

Explore the salinity of various bodies of water, then re-create their waters to see if you can make an egg float or sink. Experiment with other objects too.

Learn more: Saltwater Density at Uplifting Mayhem

Watch the greenhouse effect in action

Climate change can be a contentious topic, so start by teaching kids about the greenhouse effect, which is easy to see and understand. Then, urge them to explore data collected by other scientists so they can learn to make informed decisions about topics like global warming.

Learn more: Greenhouse Effect at Teaching Science With Lynda

Blow bubbles to explore cell membranes

Kids are never too old to enjoy bubbles, so use them to learn more about cell membranes in this fun 7th grade science activity.

Learn more: Cell Membrane Bubbles at The Trendy Science Teacher

Marvel at a density rainbow

We learn early on that oil floats on water, but where do other liquids fit in? Students find out when they conduct this colorful density experiment that has them layer different substances, making a rainbow.

Ride the wave (machine)

Learning about wave action? Build this surprisingly easy wave machine for hands-on exploration.

Learn more: Wave Machine at Engaging Science Labs

Create a taxonomy system

Students can step into Linnaeus’ shoes by creating their own system of taxonomy using a handful of different dried beans. This is a fun 7th grade science project to do in groups, so students can see the differences between each group’s system.

Learn more: Taxonomy Project at Our Journey Westward

Bake an edible cell model

Sure, students could build a cell model out of clay, but cake and candy are so much more delicious! Check out the link below to see how one teacher does it.

Learn more: Edible Cell Model at Weird Unsocialized Homeschooling

Swing a glass of water

This classic science experiment teaches kids about centripetal force. Be forewarned: This could potentially make a bit of a mess, so consider taking this one outside.

Simulate natural selection with a lab activity

Travel to the Galápagos Islands and follow in Darwin’s footsteps as students explore finch beak adaptations in this clever natural selection lab.

Learn more: Natural Selection Lab at Teach To Serve

Participate in Project FeederWatch

Citizen science projects bring science to life for kids! One of our favorites is Project FeederWatch, where kids put out bird feeders and then count and report on their visitors. This is a great way to build a love of birding for life.

Learn more: Classroom Resources at Project FeederWatch

Experiment with basic substances to learn about chemical change

If you’re introducing lab work and chemistry basics to 7th graders, this easy lab is a great way to do it. They’ll learn safety procedures and get to feel like “real” scientists as they pour, mix, swirl, and more.

Learn more: Chemical Change Lab at Super Sass and Science Class

Assemble an edible DNA model

DNA models are always more fun when you can snack on them afterwards. Want to make this a healthier activity? Use fruits and veggies to make models instead.

Learn more: Edible DNA Model at Hess UnAcademy

Craft a food web marble maze

Combine a STEM challenge with learning about food webs in this clever project. Kids will love the hands-on aspect, and it will really help the learning stick.

Learn more: Food Web Marble Maze at Teach Savvy

Keep the STEM learning going with these 15 Items All Middle School Math Classrooms Need .

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Science Fair Ideas for 7th Grade – 60 Perfect Projects

June 27, 2024

If your 7th graders are preparing for the science fair, it’s possible that you’re looking for some ideas to get them started. With these 7th grade science projects, your students will be sure to feel inspired and ready to begin. These science fair ideas for 7th grade include projects related to biology, health & psychology, environmental science, chemistry, physics, and engineering.

Things to consider – Science fair ideas for 7th grade—60 perfect projects

Each of these projects is ranked according to “difficulty” and “materials.” You can consider these rankings as you decide which to share with your 7th grade students.

Difficulty : How advanced is the project? Do your 7th graders have enough time to complete it? Each project is rated “basic,” “medium,” or “advanced” based on the complexity of the concept and the amount of time it will take.

Materials : These projects also range in terms of the complexity of the materials and setup, and are ranked as “basic,” “medium,” or “advanced.”

Biology – Science Fair Ideas for 7th Grade—60 Perfect Projects

1) extracting dna from onions.

  Can DNA be studied separately from other cell components? In this experiment, students creatively use a variety of household supplies to learn more about DNA, an important biology concept.

• Difficulty: advanced
• Materials: advanced
• Learn more: onion DNA extraction

2)  Grow box design

  Build a grow box (or series of grow boxes) for plants using cardboard, foil, and a plug-in light source. Students can test the effectiveness of the grow box when variables are changed, such as light source strength and box size. After this experiment, your students can invite plants into their homes or the classroom all winter long.

• Difficulty: medium
• Materials: medium
• Learn more: DIY grow box

3) Collect biofilm

  Biofilm is comprised of microscopic bacteria accumulating on objects in the water (you might notice it rivers, swimming pools, or even on the surface of teeth). Students can quantify biofilm by building a collector. They can also experiment with ways to reduce it.

• Learn more: biofilm experiment

Science Fair Ideas for 7th Grade – 60 Perfect Projects (Continued)

4) plants and phototropism.

  Do plants really grow towards light? Discover more about how plants respond to light through this simple experiment.

• Difficulty: basic
• Learn more: phototropism

5) Nitrogen and plants

Explore the important role of nitrogen in plant growth with this science fair project. The experiment involves comparing the growth of pea plants with and without nitrogen-fixing bacteria.

• Learn more: nitrogen and pea plants

6) Bubble cell membranes

  If you’re looking for a fun way to teach 7th graders about cell membranes, consider using bubbles. Through this lab, students investigate the behavior of bubbles and apply it to cell membrane characteristics.

• Learn more: cell membrane bubble lab

7) Test Darwin’s theory

  With this lab, students repeat Darwin’s “survival of the fittest finch” experiment for a fun and interactive way to learn about natural selection and evolution.

• Learn more: natural selection lab

8) Carbon cycle experiment

  Help your 7th graders learn about processes of photosynthesis and respiration through this project that combines biology and chemistry concepts.

• Learn more: carbon cycle experiment

9) Test for germs

  What’s the dirtiest place in the kitchen? The refrigerator handle? The coffee machine? The sink? Students can guess, though it might not be what they think. Swab household items and store the samples over several days to find out.

• Learn more: germ experiment

10) Cell size lab

  In this project, students can analyze surface-area-to-volume ratios using beets and bleach, demonstrating how small cells are more efficient at moving materials in and out.

• Learn more: cell size lab

Health and psychology – Science Fair Ideas for 7th Grade

11)  colors and memory.

  Find out how color affects memory by asking volunteers to recall simple words on differently-colored construction paper.

• Materials: basic
• Learn more: color influencing memory

12) Measuring tooth decay

  Since eggshells share similar properties to teeth, your students can use them to test how different beverages erode tooth enamel. This project teaches biology concepts while also encouraging healthy eating and dental care.

• Learn more: tooth decay egg experiment

13) Cooking and Vitamin C

  Do cooked fruits and vegetables have less Vitamin C than raw ones? This is another good experiment for your students interested in nutritional science. This project involves a slightly more complex procedure, so it’s also perfect for your advanced 7 th grade students.

• Learn more: Vitamin C determination

Science Fair Ideas for 7th Grade (Continued)

14) caffeine and typing.

  Does a jolt of caffeine help you work more efficiently? Test this out through typing with this 7 th grade science experiment. Your 7 th grade students can run this test with mild forms of caffeine, such as soda or a piece of chocolate.

• Learn more: caffeine and typing

15) Psychology and texting language

  If you teach 7 th graders, you may have heard them speaking in texting-speak. Have these texting abbreviations become a full language? With this project, your 7 th grade students can create a text-language glossary and study its practical applications.

• Learn more: is texting a new language?

16) Test calorie counts

  Where does the calorie number on packaged foods come from? Try this experiment with a variety of foods to help your students understand how food energizes us.

• Learn more: test calorie counts

17) Balloon lung capacity

  Using a balloon and a tape measurer, students can measure lung capacity, which has a number of health implications. It can be made more or less complicated depending on the measurements taken (circumference vs. volume of the balloon, for example).

• Learn more: measuring lung capacity

18) Myers-Briggs and memory

  Are your students interested in exploring questions of psychology and memory? This experiment involves asking volunteers to take a Myers-Briggs personality test, followed by a simple memory exam. They only need internet access and willing volunteers.

• Learn more: memory and personality

19) Flexibility experiment

  There are a number of reasons for stretching, including reducing chances of injury and feeling calmer. But does stretching actually make us more flexible? Find out by comparing flexibility before and after stretch exercises. Students can test volunteers after holding the stretches for different lengths of time.

• Learn more: flexibility experiment

20) Sleep and memory

  Can sleep deprivation affect memory? Your students can find out by quizzing volunteers on trivia studied beforehand after 8 or 5 hours of sleep. While this project takes some planning, organization, and willing volunteers, it’s a fun way to promote healthy sleep habits.

• Learn more: sleep and memory

Environmental science – Science Fair Ideas for 7th Grade

21) water filtration.

Create a charcoal filter in order to better understand water filtration systems. Afterwards, students discuss the science behind clean drinking water, as well as its environmental implications.

• Learn more: charcoal water purifying experiment

22) Acid rain and plant life

  Does acid rain negatively affect plants? Students can test this environmental concern using vinegar. Advanced students can also experiment with different pH levels for a more complex project.

• Learn more: acid rain experiment

23) Ocean acidification

  For another project related to acidification, students can make stimulated ocean water and test its effects on seashells.

• Learn more: ocean acidification lab

24) Test the greenhouse effect

  Though the greenhouse effect can help planet Earth to stay at a livable temperature, it also causes harmful global warming when enhanced by excess greenhouse gases. With this model, students can see the greenhouse phenomenon in action, and discuss how humans could reduce greenhouse gas emissions.

• Materials: simple
• Learn more: greenhouse effect experiment

25) Grow garbage plants

  Grow plants using different kinds of compost and garbage to see which kind of matter facilitates the quickest growth. This project is a great way to teach about composting and sustainability.

• Learn more: growing plants in garbage

26) Water cycle bags

7th grade students can learn more about the water cycle with only a Ziploc bag, food coloring, water, and a marker. Once these water cycle bags are created, they can be hung by a window and checked throughout the following days. Students can observe and record a miniature water cycle happening before their eyes. For more complexity, they can check it at different temperatures.

• Learn more: water cycle bags

27) Glacier ice-cutting

For a demonstration of how glaciers melt from pressure, try this ice-cube-cutting experiment. Mix it up by timing the process with differently sized ice-cubes and weights.

• Learn more: ice cube vs. wire

28) Water quality testing

  A simple water testing kit opens numerous possibilities for science fair projects, including testing the water quality of local streams, ponds, swimming pools, and drinking-water taps. If students don’t have water testing kits on hand, they can purchase them for under $30. This is a perfect way to teach about the importance of clean water sources.

• Learn more: water quality experiment

29) Algae growth

  Teach students about fertilizer runoff and its harmful impacts on local waterways through this experiment, which has students test the effects of pollutants on algae growth using household fertilizers.

• Learn more: algae and pollution

30) Bird watch

  Project FeederWatch is perfect for students who might take an interest in ornithology. It only involves putting a bird feeder outside and recording the number of visitors. For more complex studies, students can take on Feeder Design Challenges .

• Learn more: bird feeding with Project FeederWatch

Chemistry – Science Fair Ideas for 7th Grade

31) slime design.

  Chances are, you already know that middle school students love slime. Turn the fascination into a learning activity by experimenting with chemical properties to create the best slime.

• Learn more: how to make slime

32) Mummify a hot dog

  Students can understand the chemical processes involved in mummification by completing this simple experiment.

• Learn more: hot dog mummification

33) Eggshell chalk

Your 7th graders can make their own sidewalk chalk by using the calcium in eggshells. They can change variables (flour type, water temperature, etc.) to see which chalk is the most long-lasting or water-resistant.

• Learn more: make your own eggshell chalk

34) Homemade ice cream

  The secret to making ice cream is to lower the freezing point of ice. The secret to this secret? Salt. With this experiment, students can have delicious vanilla ice cream ready in about 20 minutes. Test different ingredients for the creamiest results.

• Learn more: homemade ice cream

35) Saltwater and density

Explore salinity by making an egg float or sink in water with various salt levels. You can base your salt levels on notorious salty bodies of water such as the Great Salt Lake (6-27% salt water) and the Dead Sea (34% salt water).

• Learn more: egg float science experiment

36) Oxidation experiment

  Ever wondered how to slow or prevent rusting? Rusting occurs through a process of oxidation, which can be slowed using different liquids. Test how saltwater, freshwater, and other liquids affect oxidation on common metal objects (paper clips, staples, coins, etc.)

• Learn more: does it rust?

37) Static water bending

  Change the flow of water just by combing your hair and then holding it next to a stream of water. How far can you bend the water by combing your hair for different lengths of time? This is a great way to help 7th graders understand static electricity.

• Learn more: bending water experiment

38) Blow bubbles

  Yes, bubble-blowing can be a science fair project. Ask your students to test how temperature affects bubble life through this fun experiment.

• Learn more: bubble life and temperature

39) Red cabbage pH indicator

  Explore chemistry by testing the pH of liquids such as vinegar, milk, and coffee. You’ll need cups and bowls, and of course, red cabbage.

• Learn more: red cabbage indicator experiment

40)  Plate coins with copper

  Create copper-plated coins by extracting copper from a solution, through processes of electrolysis and electroplating . This is a fun way to combine chemistry and electrical engineering.

• Learn more: copper plated coins

Physics Projects – Science Fair Ideas for 7th Grade

41) balloon temperature.

  Using this simple and visual balloon experiment, students can better understand how air expands when heated, a basic component of thermodynamics.

• Learn more: balloon temperature experiment

42) Floating tea bags

  To teach your students about heat and its effects on air molecules, give them this tea bag experiment. Since this project involves fire, you should make sure your students have adult supervision while conducting the experiment. It’s also great for a class demonstration.

• Learn more: floating tea bags

43) Build a parachute

  7th graders can learn about speed, velocity, and acceleration by crafting their own parachutes. They can use different bag materials to test for a smooth fall and graceful landing.

• Learn more: build a parachute

44) Solar-powered oven

Teach your students about thermal energy, reflection, and convection through this fun project. Test the oven on a warm sunny day for delicious results (s’mores).

• Learn more: build a solar oven

45) Swing a glass of water

  This is a great way for 7th graders to learn about centripetal force. The goal is to swing glasses of water over their heads without spilling the water (we recommend doing this experiment outside since it has the potential to get messy).

• Learn more: centripetal force experiment

46) Instant ice

  Through this experiment, your students can experiment with instant ice. For variations, try leaving the water in the freezer for different times, or using other liquids.

• Learn more: instant ice experiment

47) Rainbow density tower

  Teach about density using this simple project with a beautiful outcome. Once students have created their density towers, they can test the density of other objects ty tossing them in (how far will a coin sink? A peanut? An egg?)

• Learn more: density tower

48) Separate hot and cold water

  For another density-related experiment, try separating water by temperature. Students can run the test with the hotter (less density) on the bottom and colder (more density) on the top, and then vice versa.

• Learn more: separating hot and cold water

49) Physics of sound

  It turns out that sound has physical matter. Students can demonstrate this by blowing out a candle using only sound vibrations, which move through an oatmeal box.

• Learn more: discovering sound matters

50) Graphite circuit

  For another electricity-focused experiment, challenge your students to create an electrical circuit using pencil graphite. Since it involves drawing, students can put their art skills to use for a beautiful result.

• Learn more: graphite circuit

Engineering Projects – Science Fair Ideas for 7th Grade

51) pet auto-feeder.

  For a more advanced project with practical application, have your students build this automatic pet feeder. Some coding is involved, which could interest your computer-engineering-oriented students.

• Learn more: auto-feed your pet from anywhere

52) Balloon-powered car

  To help your students learn about engineering design and kinetic energy, suggest that they build a balloon car out of materials likely found around their homes. They can experiment with different wheel and balloon sizes to see how fast the car can go.

• Learn more: Newton’s balloon car

53) Build a geodesic dome

A geodesic dome is a thin-shell structure created out of triangular elements, which help it to withstand heavy loads. This experiment utilizes geometry concepts and it only requires paper and masking tape (students can play with different types of paper and tape as variables).

• Learn more: geodesic dome

54) Da Vinci’s bridge

  This bridge-building project is inspired by Leonardo da Vinci’s self-supporting wooden bridge. Your students will only need pencils and rubber bands (not to tie the pencils together, but to make sure they don’t slip). Test the bridge with different objects to see how much weight it can take.

• Learn more: Da Vinci’s bridge

55) Tensegrity structure

  Understand the mechanics of tension by making this functional floating structure that’s mind-boggling to look at. You will need string, popsicle sticks, and some patience for exact measurements.

• Learn more: anti-gravity structure

56) Make a water clock

  In this engineering project (which has been around since ancient times), students can create a clock from plastic cups, a small bell, yarn, and several other common craft items.

• Learn more:   water clock

57) Design a pinball machine

  Your 7th grade students can create functioning parts for a homemade pinball machine using objects found at home or in the classroom. They can test for speed and materials as they craft their own game.

• Learn more: homemade pinball

58) Rubber band helicopter

Students can learn about helicopter mechanics by constructing this flying and rubber-band-powered toy.

• Learn more: rubber band helicopter

59) Crash cars

This experiment involves building cars and then crash-testing them with raw eggs inside as “passengers.” What structures best protect the egg? Beware: this one could get messy.

• Learn more: car crash project

60) Build an electricity generator

  For another electrical engineering project, students can create an electric generator. Challenge them to test the generator using different materials for different results.

• Learn more: energy generator

Final thoughts – Science Fair Ideas for 7th Grade

Hopefully your 7 th grade students will find projects to get excited about from this list. For more classroom resources applicable to middle school students, we recommend the following articles:

• 124 Good Icebreaker Questions for Students/Adults
• 141 Fun, Weird, & Interesting Facts
• 102 Fun Last Day of School Activities
• 56 8 th Grade Science Fair Projects
• 100 Best Quotes About Education & Teachers
• 150 Journal Prompts for Kids, Middle & High School Students
• 151 Best Summer Jobs for Teachers
• Teacher Tools

Sarah Mininsohn

With a BA from Wesleyan University and an MFA from the University of Illinois at Urbana-Champaign, Sarah is a writer, educator, and artist. She served as a graduate instructor at the University of Illinois, a tutor at St Peter’s School in Philadelphia, and an academic writing tutor and thesis mentor at Wesleyan’s Writing Workshop.

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30 Ideas For 7th Grade Science Fair Projects

By Beth Roberts | Last Updated May 4, 2022

We’ve compiled some of the best seventh grade science fair projects for your convenience! These science fair project ideas for 7th graders are sure to get you inspired and ready to do go on your own amazing research. We’ve also provided a list of resources you can use at home or in the classroom that will help give you tips on how to start your project, how to present it, and how to write an awesome science fair paper.

1. Drive A Balloon-Powered Car

This is an easy to build science fair project that you can even do with your younger brothers and sisters. You will need a high-quality balloon, scissors, tape, paperclip and a ruler.

First you will want to cut off the end of the balloon just above where half of it already has a hole in it. Then thread the tape through the hole so that it is on one side and stick the paperclip through it (close to the bottom of the balloon). Now take your ruler and measure how long it is going to be. When measuring however, you have to make sure that you are going to cut past where half of your paperclip is.

2. Make A Bionic Hand

This project involves making a bionic hand out of rubber and plastic parts and will involve cutting, gluing and soldering. You will want to be careful when cutting this project as you can seriously injure yourself if you cut too close to the plastic so make a good outline before doing it. First you will want to find out how big your hand is going to be. Then draw that on the rubber sheet with a pencil (minus the thumb where it will be). Measure how long your hand is going to be from top to bottom then measure 1/4″ from all 4 sides (you want 4 measurements).

3. Do An Experiment On The Physical Properties Of Water

This seventh grade science fair project assumes you already know some things about the physical properties of water. You will want to do this experiment with a partner who also knows some things about water. First you will want to find out whether or not your partner is willing to do this experiment with you and then measure out how many 1/2 cups of water there are in a gallon. Then take a sample of that and measure it again, this time in 1/4 cups. Then you will want to find out how many 4 oz cups are in your sample, then 1 cup and then 2 cups. Now take your results and do what is called an average of those measurements in a data table like this.

4. Make A Tornado In A Bottle

This project is somewhat easy but it may take some time to get right . You will want to do this by yourself as you can be seriously injured if you do the wrong thing. First you will want to take your empty soda bottle and rinse out all of the soda from it. Then make sure there is no water left in the bottle from rinsing it then soak it in water for about 20 minutes. After your 20 minutes are up, shake the water out of the bottle, but make sure you leave enough that it will not leak out as soon as you put in your dry ice (if you use dry ice).

5. Sorting Jellybeans is a Fun way To Learn about Heredity.

Use the following pointers to sort jellybeans :

a. Jellybeans come in blue, yellow, orange and pink jellybean colors (you can use colored paper and a different color of pen)

b. Jellybeans are round (you can use a ruler)

c. The outside edge of each jellybean is the “seam” that runs down the middle of the jellybean (you will be able to see this clearly after you fill the bag) 

6. Allow A Teabag To Float In The Air

This experiment is best done outside. First you will want to take a tea bag and put it in a glass of water , then carefully place it on top of the water in the cup. Make sure there is plenty of room between the cup and the tea bag (this will allow for air to circulate and help it to float). Watch as your teabag floats in mid-air!

7. Make A Slime Bomb

This science fair project is best done with an adult or older kid . You will want to find out what chemicals to use for the slime (you can search the internet for that) and then make it. It is best if you have a friend who knows how to make slime with you, too!

8. Build A Mini Catapult And Launch Yourself Across The Room

This science fair project can be fun , but it does take some time to get right. You will need several objects to build a mini catapult out of: a small stick, tape, string, paperclips and cans (for launching).

9. Make A Vacuum Cleaner Powered Fan

This science fair project is fun , but it can be dangerous. You will want to do this in an area where you do not have many dangerous electrical cords nearby and make sure you can easily get out of the way if it starts to fly off the ground. You will need a fan, a handheld vacuum, scissors and paperclips. First you will want to take apart your handheld vacuum and find the blade part of it. You will want to cut out about 1/2″ of the rubber around the blade. Then tape that on one side of your fan (make sure you have 2 blades facing each other).

10. Make A Solar Oven Design.

Students explore thermal energy, reflection, convection, and other physics principles as they experiment with the best way to create a solar oven . They’ll be able to serve up their experiment findings as well as their final reports!

11. Make A Rocket Powered By Dry Ice.

This is a science fair project that is best accompanied with someone who has done this before. You will want to make sure you are in an open area where you can easily get out of the way if it does not work.

First you will want to use a craft knife to cut out the bottom part of a soda bottle, making sure that you leave about 1/4″ on the bottom so it does not leak. About halfway up you will want to then cut off another part (this will be used for your air intake) and make sure your intake side is smaller than your exhaust side. Cut as close as possible so that they are seamless together.

12. Make Your Own Lava Lamp

This is a fun science fair project that involves melting wax and oil together . You will want to make sure you have something to put this in (a bottle, jar or plastic cup would work). You will need: red food coloring, water, dish detergent, oil (olive or vegetable), and that small globe from a lava lamp you might have lying around the house.

13. Take A Look At How The Greenhouse Effect Works.

The greenhouse effect is a natural phenomenon that can be observed in the Earth’s atmosphere on a daily basis. Many people are unaware of how it works and how much it affects our lives. This project encourages students to gain a better understanding of the greenhouse effect and its impact on Earth’s temperature.

14. Use Water Color To Make Your Own Kaleidoscope

You can use a permanent marker, paint or crayon. By varying the size and shape of the dots, you can create many different patterns in your result. Study how light is reflected in two and three dimensions of the pattern.

15. A Dense Rainbow Is Awe-Inspiring.

Density is the same as mass divided by volume . It is a measure of how tightly packed together molecules of matter are. This project forces students to learn about density in order to obtain a rainbow of monochromatic liquids in graduated cylinders that vary in size. The light source and liquid arrangement allows them to observe the density spectrum of each liquid.

16. Use Charcoal To Purify Water.

Water is one of the most important substances on Earth . It keeps us alive, purifies us and is also used to grow crops. Many people do not have access to clean drinking water and this project will help them by guiding them in the creation and use of charcoal for use in a filter for water purification.

17. Find Out How Energy Is Transformed.

Energy can be transformed from one form to another , but often loses some of its original properties. This project highlights the effects on a car battery if it is connected to a series of light bulbs and a conducting wire.

18. Make Your Own Tesla Coil.

Invented by Nikola Tesla in 1891, the Tesla Coil is an electrical resonant transformer circuit capable of producing extremely high voltages using an air-core transformer based on two spark gaps and two capacitors that allow alternating current through the primary coil to build up an oscillating high voltage in the secondary coil without requiring any type of power source with wires directly attached to it like you would find in conventional coils.

19. Coat Some Coins With Copper.

Copper-plating gives a metallic luster and color to many things , such as coins, jewelry, and even small kitchen utensils. In this project, students will use copper sulphate solution to convert a penny into a shiny plated coin.

20. Play With Hydraulics To See What You Can Come Up With.

Hydraulics is the study of fluids at rest or in motion and the mechanical devices that are directed by them. This project will allow students to learn about how pressure and force can be used to create movement and power.

21. Biofilms Should Be Collected And Managed.

Biofilms are naturally occurring communities of microorganisms , usually bacteria but also fungi and algae cells. Biofilms are found in almost all natural environments and on most man-made surfaces. They consist of living microbes that can persist for long periods, while producing tranquil points which may be as much as 100 times greater than their own area. This project introduces students to biofilms in order to encourage them to observe how they grow and how they are treated during the experiments.

22. Using Experiment Kits On Baking Soda And Vinegar, Make A Volcano.

An erupting volcano is an impressive sight to many people , but they are also extremely dangerous! In this experiment, students will learn about what causes volcanoes to erupt and what type of rocks are needed to build them with their own hands.

23. Crystals Are Fun To Grow And Play With.

Crystals are beautiful, fascinating and useful . Students will learn about how crystals grow by experiencing it themselves and observing the different ways they can form, with the help of a variety of experiment kits. This is a hands-on science experiment that encourages students to be creative, experience sensory impact and develop an intuitive understanding of materials as they work with them in real time.

24. Explore The Laws Of Motion Using A Spinner.

Gyroscopes are used in many aspects of our everyday lives . You know them as small spinning wheels that come with every electronic device nowadays, but their uses extend from guiding missiles and rockets in flight, to balancing boats and planes, to keeping your computer monitor from falling over on its side.

25. Make A Simple Breadboard To Use A Battery And Then Attach LEDs.

A breadboard is a board which allows you to connect multiple electronic components on one side . This project uses simple components to demonstrate the use of electricity in real time. You will need some type of battery and some LEDs, but you can buy these items at a local hardware store in addition to assembling the parts yourself.

26. Make A Simple Musical Instrument Using Simple Items.

A musical instrument is any object that is used to make music . In this project, students will use an empty plastic water bottle and some chopsticks to make a simple musical instrument; they will explore the laws of vibration by experimenting with a variety of sounds.

27. Make A Paper Airplane Which Can Fly.

A paper airplane is an aircraft designed to fly by being thrown . There are many variations of paper airplanes, but they all rely on the same basic structure and usually only require a piece of paper or thin cardboard. In this project, students will learn about aerodynamics as they build their own paper airplane.

28. Build A Storage Bin Using Recycled Materials

Storage bins are used to store clothing or other things that you do not need to use regularly but still want to keep around. This project will help students learn about the different shapes of storage bins and the ability they have to store things while being used in real time.

29. Make A Simple Compass.

A compass is a tool used to measure direction and orientation . It is used for navigation and orienteering. This project will help students explore the earth’s magnetic field using simple materials to create their own homemade compass.

30. Make A Rock Tumbler And Use It To Polish Rocks.

Polishing can be a valuable skill that provides aesthetic value and shiny, smooth surfaces for your household items. In this experiment, students will explore various sources for polishing rocks, as well as using their own creativity to create dazzling results in real-time during the experiment itself.

The field of science is vast and varied, with many different types of projects that students can engage in to learn about the world around them. Science projects can be engaging for students and teachers alike if they are designed to provoke a level of interest and excitement about what students are learning. It is also important to consider that science is not only limited to the four corners of a book or classroom; it is all around us, literally everywhere!

This means that there may be opportunities for children to learn while they are waiting in line at the bank, watching television at home, or even while they are otherwise being entertained.

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Video: pathways to college completion in the san joaquin valley, he groupings, unions join forces to fight austerity cuts, l. angela webb, supreme court paves way for execution of prisoner with parkinson’s, princeton review names etsu a ‘best college in the south’, charleston southern university sees record-breaking enrollment this fall, how to find your fellow k–12 ed tech enthusiasts, how mobile learning platforms are shaping employee skills, why students can’t work on their own, 43 of the best 7th grade science projects and experiments.

Are you looking for science activities to do with your 7 th graders? No sweat. We have you covered. Check out our list of 43 science projects and experiments that you can try with your 7th graders this month.

• Yeast Metabolism with and without Aeration | Sciencebuddies.org – Grades 6-8 Biology experiment that evaluates the effects of glucose metabolism in yeast.
• Aspirin Absorption in Carbohydrate Solutions | All-Science-Fair-Projects.com – Grades 6-8, Does aspirin absorb into the bloodstream quicker if taken with a carbohydrate food? Test aspirin dissolution in an assortment of carbohydrate solutions.
• Bacteria and Toothpaste | All-Science-Fair-Projects.com – Grades 6-8, Do you know which toothpaste cleans your teeth best? In this project, you will row bacteria from your recently brushed teeth in petri dishes to find out the answer.
• Making Batteries from Fruits and Vegetables | Sciencebuddies.org – Grades 4-7, Use veggie power to build a simple battery from a variety of vegetables. Which ones are the most powerful?
• How Do Roots Grow When the Direction of Gravity Changes? | ScienceBuddies.org -Grades 6-10, Plants respond to gravity by stems that grow upward and roots that grow downward. Experiment with germinating seeds and rotate them to make up down and down up. How do you think the growing seedlings will respond?
• Hydroponics vs. Soil Growth | All-Science-Fair-Projects.com – Grades 6-8, In this project, students find out if plants grow better in soil or a hydroponic solution.
• Puppy Proportions: Your Dog’s Early Months | Sciencebuddies.org – Grades 6-8, Find out how a puppy’s weight, growth, and proportions change early in their lives.
• Do Migratory Birds Like It Hot? | Sciencebuddies.org – Grades 6-8, Pick a species of bird and determine if there is a correlation between air temperature and where and when the birds migrate.
• That’s a Real Smile! …or is it? | ScienceBuddies.org – Grades 6-8, Can people tell the difference between a fake smile and a real one? Gather information from dozens of volunteers to find out.
• Build a Raft Powered by Surface Tension | Sciencebuddies.org – Grades 6-10, Learn about the properties of surface water tension, and use it to propel a raft.
• Paw Preference in Pets | Sciencebuddies.org – Grades 7-10, Are animals left-handed or right-handed like humans?
• Bat Detector: Listen to the Secret Sounds of Bats | Sciencebuddies.org – Grades 7-10, Study the behavior of bats to find out how do they use echolocation to catch their prey
• Saving Migratory Animals | ScienceBuddies.org – Grades 7-10, They’re here today but could be gone tomorrow. Examine the migratory path of a bird species and the similarities and differences between their winter and summer habitats. Recommend which locations should be preserved to protect these species.
• Which Metal Is the Most Resistant to Corrosion? | Sciencebuddies.org – Grades 6-8, Test several kinds of metal exposed to the air, tap water, and saltwater to determine which are the most resistant to corrosion, and which substances are the most corrosive to them.
• Ionizing vs. Photoelectric Smoke Detectors | All-Science-Fair-Projects.com – Grades 6-8, Learn how smoke detectors work, and compare the effectiveness of ionizing smoke detectors to photoelectric smoke detectors.
• Robot Movement | Education.com – Grades 6-8, Construct a robot equipped with sound/touch sensor circuitry. Run it through a maze to find out if it displays sequential or random movement.
• Repurposed Designs | Education.com – Grades 6-8, Identify items that need repurposing such as e-waste, batteries, and mattresses. Then get creative and Invent your own original repurposed design.
• Solar-Powered Robot Bug | Sciencebuddies.org – Grades 6-8, Explore electronics and solar energy by building the Frightened Grasshopper, a solar-powered bug.
• Stressed Out with Beams | Sciencebuddies.org – Grades 6-8, Test the load-bearing capacity of several types of beams, including I-beams, U-beams, rectangular beams, and T-beams.
• Build a Gauss Rifle | ScienceBuddies.org – Grades 6-8, Use magnets and ball bearings to build a rifle based on magnetism. Investigate how many magnet and ball bearing “stages” affect the velocity and distance of the projectile.
• Smart Medicine Cabinet | ScienceBuddies.org – Grades 6-8, Do you know someone who needs to take medication daily? Create a sensor that reminds patients when to take their medication.
• electromagnet?
• Grow the Best and the Largest Crystals | Sciencebuddies.org – Grades 6-8, Figure out the best temperature for making the largest, purest crystals using water and borax.
• What’s the Fastest Way to Cool a Soda? | ScienceBuddies.org – Grades 6-8, Experiment with different ways to cool a can of soda.  Find out the fastest way to get your tall cold drink.
• How Much Potential Energy Do Different Nuts Have? | Education.com – Grades 6-8, Explore the energy of living things. Prove that different varieties of nuts produce electricity in a series of experiments.
• How Salty Does the Sea Have to Be for an Egg to Float? | ScienceBuddies.org – Grades 6-8, Figure out precisely what concentration of salt in water is required to make an egg float.
• Washing Detergent & Hydrophobic Soil | Education.com – Grades 6-8, Some soils do not absorb water very well.  Find out why and if washing detergent and change their ability to absorb water.
• Make Your Own Psychrometer | Sciencebuddies.org – Grades 6-8, Make a psychrometer to measure relative humidity, then use it to measure RH in a variety of weather conditions.
• Do Our Storm Drains Keep the Ocean Trash Free? | ScienceBuddies.org – Grades 6-8, Test your local grated storm drain inlets to see if they’re up to the task of keeping plastic litter out of your community’s stormwater drainage system. If they’re not, work on improving the design.
• Can Water Float on Water? | ScienceBuddies.org – Grades 6-8, Can liquid water float on liquid water? Investigate how the density of water is affected by its temperature and salinity.
• What Weather Factors Create Radiation Fog? | Sciencebuddies.org – Grades 6-8, Make systematic observations about the weather conditions needed to create radiation fog. Can you forecast when and where it will occur?
• The Science Behind Tsunamis | Sciencebuddies.org – Grades 6-8, Study the effect of water depth on wave velocity. Learn how tsunamis form and create your own simulation model wave tank to generate a tsunami.
• Killing ‘Vampires’: Saving Money and Power | Sciencebuddies.org – Grades 6-8, In this project, you’ll identify electricity “vampires” in your home, such as computer peripherals and electronic equipment, that use power even when not in use. Find out exactly how much energy they use. Use this eye-opening data to help your family save money on electricity.
• Which Wheels Work Best? | Education.com – Grades 6-9, Experiment with how different kinds of wheels affect the speed of a skateboard.  You’ll calculate friction co-efficient and its correlation to velocity.
• Test the Efficiency of a Solar Cell? | Education.com – Grades 6-9, Find out how much of the energy from the sun that reaches a photovoltaic cell is changed over into electricity.  Predict how to position solar cells for maximum conversion.
• How Acidic Waters Make Rocks Disappear | Sciencebuddies.org – Grades 6-10, Soak some limestone rocks in varying amounts of acidic water.  Determine how much acidity is needed to make them dissolve.
• Seafloor Spreading | Education.com – Grades 6-12, Use an oatmeal box and some paper to demonstrate seafloor spreading.
• Storytelling Alice | Sciencebuddies.org – Grades 6-12, Create your own computer-animated story using Carnegie Mellon’s 3D programming software. You’ll learn computer programming with easy-to-use drag and drop tools.
• Modeling Darcy’s Law | Education.com – Grades 6-12, Model the underground movement of water, utilizing Darcy’s Law.
• Globular Clusters | Sciencebuddies.org – Grades 7-10, Explore “star gangs” in the Milky Way and beyond. Globular cluster are compact groups of about a million stars that move around in galaxies. Use statistical data to learn how globular clusters help us better understand the universe.
• Demonstrating the Separation of Mixtures | Education.com – Grades 7-10, Separate recycled objects to illustrate how mixtures are created.
• Customize Your Own Drum Set! | ScienceBuddies.org – Grades 7-10, Build a drum set using household materials, a computer, Scratch, and a PicoBoard. Program your drum set to create a synthesized Hip hop, rap, classical, techno, or electronic drumbeat.
• Harmful Algal Blooms in the Chesapeake Bay | Sciencebuddies.org – Grades 8-12, Harmful algal blooms affect the quality of water and impact people, marine animals, and birds. Study how water quality changes before, during, and after algal blooms.

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23 of the best 9th grade science projects and experiments.

At many middle schools and junior high schools, the annual Science Fair is the highlight of the school year. Help your 7th grader select the best science fair idea, then step back and watch your scientist shine!

In this post, we’ve assembled 17 great science fair project ideas for 7th grade. We link each project description to its original source, where you can get more information and step-by-step instructions.

Science Fair Projects on Earthquakes

This site offers several different project ideas related to earthquakes. There are links available for additional information.

Recommended for Grades 7-8.

Source: www.earthquake.usgs.gov

The Science of Fingerprints by Leonard Bloch

Fingerprints offer a fun way to explore the science of forensics. This site offers some basic experiments and then takes the student on a “Crime scene” investigation using their fingerprint knowledge.

Source: www.fun-science-project-ideas.com

Gender Difference in Resting Pulse Rate of 7 th Graders

This experiment tested to see if gender made a difference in resting heart rates. Follow the scientist’s experiments to see what you conclude.

Source:  www.sciencefair-projects.org

Do Humans Have a Blind Spot?

This experiment will test if humans have a blind spot in their vision and how to find it.

Source: www.exploratorium.edu

Correlation between ring finger length and athletic ability

Does the length of your ring finger determine how accomplished of an athlete you are? This project guides you through the steps to find out.

Recommended for Grades 6-7.

Source:  www.all-science-fair-projects.com

The Mechanics of Carnival Games

This site gives you the background and instructions for answering this age old carnival question…..Why are the “simple” games at carnivals so hard to win?

Source: www.sciencebuddies.com

Metal Conductivity

Discover which metals are best for a pot or a handle on the pot. This site guides you through the process of scientific discovery.

Source: www.hometrainingtools.com

Taste and Smell

This experiment tests the relationship between taste and smell. The site offers great guidelines, links for research and much more.

Recommended for Grades 6-8.

Source: www.sciencefair.math.iit.edu

Does Chewing Gum Make You Smarter?

This will test the theory that chewing gum will help you perform better on tests and other mental challenges.

Recommended for grades 6-8.

Source:  www.education.com

Which Gear Gives the Best Performance in a Kart Race?

These two scientists give you all of their tips to reproduce this experiment on your own to determine who will win your race.

Source: www.pbskids.org

How to Power a Radio with Solar Power

Learn how to power up a radio using the power of the sun!

Source:  www.makeitsolar.com

The Science of Tsunamis

Find out what effect the water depth has on a wave’s velocity.

Recommended for Grade 6-8.

Source: www.sciencebuddies.co

Cleaning Coins

This project explores the effectiveness of various cleaning solutions in cleaning tarnished and oxidized coins.

Source: www.education.com

Is There Chemical Contamination in Your Stream or Creek?

Using lettuce as a bioassay, students can test the quality of water. Check out these experiments for your science fair project.

Source: www.ars.usda.gov

Solar Cell Power Output vs Temperature

In this project you will build a simple circuit and experimental setup to investigate whether the power output of a solar cell changes with ambient temperature.

Source: www.sciencebuddies.org

Does Music have an Effect on Biological Systems?

This experiment will help to determine if music has an effect on the growth rate of vegetation.

Recommended for grades 7-8.

Source: www.cool-science-projects.com

Exploring Skyscraper Design with Legos

Can you determine the best design for a skyscraper? Test out your hypotheses using Legos.

Source: www.mpmideas.com

15 Fascinating Science Experiments for 7th Graders

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Whether it’s for the science fair, extra credit, or just exploration, there are plenty of fantastic science experiments that seventh graders can do. Here’s a roundup of 15 fascinating science experiments for 7th graders or any child of any age really who is interested in discovering something new!! These are some of the best experiments shared across the web that are definitely worth trying.

15 Fascinating Science Projects for 7th Graders…..and beyond. 

#1 – check out charcoal’s purification abilities.

This experiment demonstrates how charcoal powder, or activated carbon, purifies water. Charcoal is used in many water filtration systems, but seeing it in action is quite impressive–and all you’ll need is activated carbon, dirty water, and a few jars! Click here for instructions.

#2 – Determine If Mint Is Actually Cooling

Sure, mint always leaves your mouth feeling cooler–but does it actually cool it down? Get the details with this fun experiment that only requires some hot water, a thermometer, and some breath mints to setup. Click here for instructions.

#3 – Experiment with what plants grow best in your home in a homemade grow box

This is such a fun experiment that your kids will love to do! Pick a various amount of seeds to plant and experiment to see which one comes up first, which one produces first etc. The possibilities are endless.  Click here for instructions.

#4 – Harness The Power of the Sun

Design the most powerful “solar oven” you can using whatever materials you have on hand–like a pizza box and some aluminum foil. Then, test the effectiveness of a few different designs and make calculations regarding how long it takes each oven, at what outdoor temperature, to melt a bar of chocolate in direct sunlight. Click here for instructions.

#5 – Measure The Effectiveness of Different Insulations

Have you ever noticed how quick ice melts when you carry a cup or glass outside? You may have even noticed that ice seems to melt more slowly when placed in a foam cup compared to a paper or plastic one. In this experiment, you’ll put these materials to the test to measure the effectiveness of each type of insulated cup–ranging from a normal glass to a cups with and without lids. Click here for instructions.

#6 – How Does Color Affect Your Memory

Are certain colors more memorable or stick out more than others? Find out with this awesome science project to see if your brain remembers things better if they are in certain colors!!  Click here for instructions.

#7 – See If You Can Prevent or Delay Rust

Rust is the result of corrosion, which occurs when moisture meets bare metal. It has long been a problem in the automotive industry and countless other fields–so what can we do to prevent or delay it? Test this out by using various products and substances (such as coatings and special paints) on clean metal and then dropping the metal into water to see what rusts the quickest. Click here for instructions.

#8 – Measure The Impact of Caffeine

Caffeine is a known stimulant and it can certainly give you a kick of energy in the morning, but does it really improve your speed or productivity? In this experiment, you’ll get to explore just how caffeine effects the body and if it really has any improvement over speed and efficiency. A typing test is a great way to measure results! Click here for instructions.

I am not an advocate of caffeine on a regular basis but discovering what caffeine does to your body could be an interesting experiment. An experiment could be done with how it affects different people differently. 

#9 – Find Out If Stretching Matters

Everyone tells you to stretch out your muscles for improved flexibility, but does stretching really make a difference? Find out by measuring flexibility before and after various stretches. Click here for instructions.

#10 – Use Cabbage to Test pH

Measuring the alkaline or acidic content of a substance doesn’t require pH strips. In this experiment, you’ll just boil down some red cabbage and use it to measure the pH of various items. The rule is simple: acids turn red and bases turn green! Click here for instructions.

I remember doing this experiment in elementary and then again in High School. Posters were updated and we ended up taking second place in High School…HA HA!! 

#11 – How Much Salt Does it Take to Float in Water???

This is an easy and fun experiment to do with eggs. You will discover how much salt it takes to allow yourself to float in water without sinking. Click Here for Instructions

#12 – See What Else Floats (or Sinks)

Most people know that oil floats in water, but the point of this experiment is to see where everything else falls. You’ll just need to take a few different substances and put them in a tall pitcher. Figure out the right order and you can make a rainbow! Click here for instructions.

#13 – Build a Generator from Scratch

Anyone can plug into a potato, but how about building a real electricity generator? With a few basic supplies, you can figure out how to do just that in this exciting science experiment. You can also easily expand upon this experiment by trying various things with the generator you build. Click here for instructions.

#14 -What do Sugary Drinks do to Our Teeth

Find out with this fun Science Experiment what sugary drinks do to your teeth! This experiment may have you think twice about how much sugary drinks you actually consume! Click here for instructions.

#15 – Testing the Effectiveness of Sunscreens

There are so many sunscreens on the market and some work better than others!! This is a fun experiment that can benefit others with your findings!! You can buy little beads that change color when placed under ultra violet light  Click here for instructions.

I hope you have found at least one in this list of science experiments for 7th graders and beyond!! 

Kids Art & Craft

Science fair projects & experiments for grade 7.

School Crafts

If you’re searching for science projects for science fair projects and experiments in 7th grade, you’re in right place! Keep your learning spirit alive with our curated list of science fair projects and experiments like teabag rocket, greenhouse effect & global warming, burning calories, acids & bases, water purifying, making a barometer, students who love games, bean classification, oxidation, and make lip balm.

Science Fair Projects & Experiments for Grade 7

Read More: DIY Recycled Magazine Bangle Ideas

Basic Drinking Fountain Craft Project For Kids

Image Source/Tutorial: Kids Art & Craft

This basic drinking fountain craft for kids is a fun and creative way for kids to explore science and engineering principles. It helps them understand how water pressure works and the principles of water flow. It is a great way to encourage learning and creativity.

Simple Dyed Water Rainbow With Science Experiment

Image Source/Tutorial: KidsArt&Craft

This science experiment is a great way to teach kids about the color spectrum. It’s simple to conduct and just takes a few materials such as food coloring, water, and a few other items. With this experiment, kids can create a colorful rainbow with dyed water and learn about light refraction in the process.

Crafting a Handprint Science Project Craft For Kindergarten

This project takes the classic handprint craft to a new level. Using a few simple supplies, kindergarteners can create a science project that teaches them about the human body and its functions. It’s an easy and fun way to get kids interested in science.

Tea Bag Rocket Ideas For Kids

Image Source/Tutorial: Coffee Cups and Crayons

Do cool science experiments excite you too? If yes, then this amazing science activity will not let you down! You will see the tea bags flying on their own! This will let the children learn about the heat energy between fire and flying! You will be able to learn this activity just by a tea bag, matches, a bowl, and a plain surface and you can perform this activity to stun everyone! This activity is not messy, unlike most science experiments!

Greenhouse Effect And Global Warming Activity

Image Source/Tutorial: Teaching Science With Lynda

Teach the student greenhouse effect, climate change, and global warming in a smart and easy way! Use this activity to learn about these topics and their effects easily! This activity will also lead the students to a science investigation! Let the students use their innovative creativity with the help of this activity idea and let them out their inner creative scientists! An interactive science model always helps!

Burning Calories Science Projects

Image Source/Tutorial: Science Buddies/Calories Experiment

Build your own calorimeter with us! This science activity will help you make your own calorimeter and you will get to know the amount of calories a particular food contains! You will have to burn the food to capture the energy as in literally  ‘burning calories’! Do this cool experiment and stun everyone! Also, share this experiment with your friends and show off your knowledge!

Acids And Bases Science Experiments

Image Source/Tutorial: Education Possible

Learning acids, bases, and their nature can be difficult, but learning them in a practical way makes the learning process more efficient! This science experiment will also teach you how to use the pH scale! You will use a red cabbage indicator to test the pH value of common household things! It is an easy science experiment and will leave an impression on your kid that he/she will never forget!

Read More: Dolphin Crafts & Activities for Kids

Simple Water Purifying Methods

Image Source/Tutorial: The Homeschool Scientist

Do you want to learn how a charcoal filter works? Try this charcoal-purifying experiment to learn about the same! For this experiment, you will need a measuring cup, a teaspoon, 2 baby food jars with lids, activated charcoal, water, and red food coloring, charcoal removes molecules from the water! This is an easy and mess-free science experiment that you can try out on your own!

How To Make a Barometer

Image Source/Tutorial: Adventures With Kids

Make a barometer with us and track air pressure along with weather changes! This barometer can easily be made with supplies in your home! By this, you will be able to predict tomorrow’s weather! Collect your weather measurements each day and compare them with the actual weather to know how correctly you predicted and you will surely stun everyone with your results!

Spar Klean Science Experiment Ideas

Image Source/Tutorial: Angelicscalliwags

Get on germ alert with this amazing science experiment! You can get to know if your surroundings are cleaned or not and if they require further improvement! This is an easy science experiment and you can perform it easily at your home with already available supplies! You just have to surveillance the experiment for 4 days and you will get to know the speed and amount of germs growing in your particular surrounding!

Color And Memory Science Experiment

Image Source/Tutorial: Education.com/Colors and Memory

Explore with colors whether they affect your memory or not! Use different colored markers to write something important and see whether you remember what you have written before and of which color. If you remember some that identify which certain colors you remember and those colors will be the effective colors for your brain to easily learn and remember!

Read More: Duct Tape Projects Ideas For Kids

Stem Activities For Students Who Love Games

Image Source/Tutorial: Student Savvy

Games are loved b every kid and what’s better if you can able to teach them something while they play games? These amazing stem activities are full of science applications and the children will love to explore and play with them and unknowingly will learn science too! Educate children with smart learning activities to keep them interested and never let them forget anything!

Easy Bean Classification Science Project

Image Source/Tutorial: Our Journey Westward

Make the students learn about bean taxonomy practically! This activity includes assigning 40-50 different types of beans to every student and they have to classify them in creative characteristics, not colors! In the end, the students will be able to separate beans in different-different characteristics other than bifurcating them into colors and will learn the full taxonomy of each bean in a fun learning way!

Oxidation Experiment For grade 7

Image Source/Tutorial: Teach Beside Me

Learn the process and reason for oxidation! Do this cool science experiment to know why the metals rust and when. Also, a measure which thing rust quickly! This is a fun science experiment with the easiest supplies available to you around, all you need are the things you need to check if rusts or not, paper cups, and some water. Keep the things individually in paper cups with water and just surveillance them if they rust! That’s all!

How To Make Lip Balm

Image Source/Tutorial: Science Buddies/Lip Balm DIY

Make your own DIY lip balm at home! This science experiment will let you be a cosmetic scientist! Create a lip balm in your kitchen with just some simple supplies and test it! This lip will be cheap unlike the costly lip balm available in the market! You can also customize your lip balm in different colors and fragrances and even gift it to your friend! They will love it! Wake up your inner scientist and make it with us!

I hope you like our list of Science Fair Projects & Experiments 7th Grade and will surely try to make them. If you like our ideas and want to read more crafts ideas, Keep visiting our website for the latest DIY ideas and other creative stuff for kids, parents, and teachers. Please let us know in the comment section which Science Fair Project you like the most.

Thank you and have a nice day!

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30+ Science Fair Projects That Will Wow The Crowd

February 20, 2022 by Ana Dziengel Leave a Comment

Are your children signing up for the science fair this year? Have you begun the arduous task of looking for  science fair projects  that might pique your child’s interest? Or do you have a child who already has ten ideas they have been dying to try?

The science fair is a great school tradition and a memorable experience for many children (I still remember the life size plaster penguin I made in 5th grade), and if your school doesn’t conduct one, consider starting it!

This year if you are on the lookout for science fair projects I challenge you to think beyond the vinegar volcano (we have “Volcano Alley” at our school because there are so many volcano projects every year). I know, vinegar volcanoes are like a rite of childhood passage, but there are so many other amazing science ideas out there! I have compiled a list of 30+ science fair projects for kids based on their grade level below. Before we get started I wanted to share some tips for getting the most out of the science fair.

This post contains affiliate links.

Science Fair Tips

• Don’t do the project for your child! This is my number one tip. Many parents have a tendency to jump in and make children’s work “more presentable” or to assist their child so much in the project that it’s hard to know who actually did it. Listen I get it, science is fun and you want your child to have a wonderful presentation…but that’s not really what the science fair is about. It’s about your child learning how to do scientific research and present their findings in their own way. Think of yourself as a helpful guide NOT an assistant, and definitely not the boss.
• Choose something age  appropriate  When your child is choosing the science fair idea they want to try, make sure it’s age appropriate. Sure we’d all love to make a working robot but there’s nothing more frustrating than trying a project that may be too advanced for the skills of your child. And that’s when a lot of parents resort to doing the project instead. Not a good solution. So make sure your child is capable of completing the steps them self.
• Make a list of three ideas Have your child select three science fair project ideas and then go over the choices with them. Make sure they understand the steps involved in each project and wether or not they feel comfortable in executing those steps on their own with your guidance.
• Follow your child’s interests Encourage your children to explore some ideas based on interests they already have. Here’s a list of science books with projects based on things your child already loves!
• STEAM it up! STEAM projects rock the science fair!!! A great way to get kids to become more familiar with STEAM concepts it to pick science projects that crossover into art, math, engineering and more!  Two STEAM books to consider are  STEAM Kids Play and Learn (my book!) and   STEAM Kids ebook.  Both books will get you started with some great ideas!
• Read our Science Fair Mini Guide I created this mini guide to walk kids  through all the steps for completing their science fair project. You can check out the full guide here: 

Speak like a scientist! Science Vocabulary to use in your presentation

We’re almost ready to get to the projects! Before we begin, let’s review some science terms. In fact, using these terms in your science fair presentation will be sure to impress your friends and adults!

• When you watch, see, or notice something you are making an observation
• When you ask who, what, when, where, why, or how, you are forming a question  
• When you read a book or an article about your observation, you are doing research
• When you make a guess based on your observation, question, and research, you are forming a hypothesis
• When you test your hypothesis, you are conducting an experiment
• When you change one factor in your experiment at a time while keeping everything else the same, you are changing a variable
• When you take notes in your journal and write down what you see happening in your experiment, you are logging data  
• When you examine, or look at, your data, you are analyzing it
• When you are able answer your question, you are coming to a conclusion

30+ Science Fair Projects for Kids 

Now let’s get on with the science fair projects! I have organized the projects by age/grade level. Click the titles to be taken to the project instructions, unless the instructions follow below.

If you’d rather have the science fair projects list organized by subject you can download our hyperlinked PDF by subscribing to our email list here .

Kindergarten-1st Grade Science Fair Projects

1.  lemon volcano.

Skip the vinegar volcano and try lemon juice! Kids will learn about the chemical reaction between citric acid and baking soda.

2. DIY Bouncy Balls

Learn about polymers while making a DIY toy!  This variation on slime uses a few simple ingredients. <span data-mce-type=”bookmark” style=”display: inline-block; width: 0px; overflow: hidden; line-height: 0;” class=”mce_SELRES_start”></span>

3. Shiny Pennies

A classic experiment that kids love is Shiny Pennies . Collect dirty tarnished pennies and have kids soak them for a minimum of 5 minutes in different acidic liquids. We used vinegar, salsa, lime juice, and lemon juice.  After soaking, remove them from the solution and rinse in soapy water then compare which ones are shiniest. Take notes on which acid worked best to shine the pennies. Variation: Don’t rinse all the pennies after removing them from the different liquids. Can you see a difference in the rinsed vs. non-rinsed pennies? Leave them overnight and see if any of the copper oxidizes (turns green) on the non-rinsed pennies.

pictured above: Regrowing vegetable scraps, DIY Stethoscope, Simple Circuit

4.  Regrow Vegetable Scraps

Did you know you can start an entire garden from vegetable scraps? It works indoors too!

5.  DIY Stethoscope

Make your own stethoscope from a few hardware store parts.

6.  Simple Circuit

For all tech centered kids: Learn how to make a very simple circuit from easy to find items.

pictured above: Chromatography Butterflies, Rainbow Rubber Eggs, Exploring Density with Salt

7. Chromatography 3 Ways

Chromatography is the process of separating mixtures, in this case we will be separating ink into different colors.

• How to do the Classic Chromatography Project The simplest kids chromatography project using paper towels
• Chromatography Art Turn chromatography strips into a woven paper art project!
• Chromatography Butterflies Learn how to separate colors and create a sweet science based craft!

8. Exploring Density with Salt

Why don’t oil and water mix? Find out with this density experiment inspired by Lava Lamps!

9. Rainbow Rubber Eggs

Rubber eggs are another classic science project that kids love. And it’s so easy! I mean does dropping an egg in vinegar and coming back in a few days sound do-able?

2nd-4th grade Science Fair Projects

10. magic rollback can.

You just can’t get rid of this physics project! This project explores the difference between potential and kinetic energy. <span data-mce-type=”bookmark” style=”display: inline-block; width: 0px; overflow: hidden; line-height: 0;” class=”mce_SELRES_start”></span>

pictured above: Bleeding Blossoms, Teleidoscopes, Density Tower

11. Absorption 2 Ways

• Bleeding Blossoms Explore capillary action and absorption in this science meets art project.
• Magical Water Blossoms Make beautiful blossoming paper flowers with the help of absorption. This project has a simple wow moment that everyone enjoys watching.

12.  Teleidoscopes

A teleidoscope is a kaliedoscpe without an end. This means you can use it to view anything and everything. Look through one of these and you will be amazed!

13. Density Towers 2 Ways:

Yes, you can layer liquids on top of each other without them mixing! This is a classic project and kids can customize the liquids they choose to layer.

• Simple Layered Liquids Learn how to make a simple density tower out of kitchen ingredients and then turn it into a lava lamp!
• Glowing Density Tower This density tower has a bonus science surprise: it glows under UV light!

14.  Magnet Magic

Make a simple hanging magnet structure and explore the magic of magnetism.

pictured above: Chromatography Art, Dry Erase Figure, Overnight Crystals

15. Make a Lemon Battery and a Lime Light

Did you know that a chemical reaction can generate electricity?

16.  Electric Playdough

AKA Squishy Circuits, this project will demonstrate that salt and water conduct electricity!

17. Simple Sound Science

Explore the science of sound with these 4 experiments, then use your knowledge to make your own DIY instrument!

pictured above: Magnetic Sensory Bottle, Magical Plastic Bag, Cartesian Divers

18.  Magnetic Field Sensory Bottle

This will surely be a hit at the Science Fair! Watch metal particles dance and move under the influence of powerful magnets!

19.  Magical Plastic Bag Experiment

It’s not magic, it’s polymers! This easy science fair project uses a minimum of materials but demonstrates how everyday polymers work.

20.  Cartesian Divers

A classic science experiment exploring buoyancy. Make “diver” swim up and down in a bottle using science.

21. Water Drop Microscope

Did you know you can make simple microscope from a plastic bottle and water? This project teaches kids to turn trash into a science tool!

22. Spinning Tops

Learn about centrifugal force and friction with one of these three spinning tops ideas!

• Spin Art Tops
• Spin-finite Tops
• Perler Bead Tops

23. Kinetic Sculpture

Make you own moving sculpture while learning about cams and gears!

<span data-mce-type=”bookmark” style=”display: inline-block; width: 0px; overflow: hidden; line-height: 0;” class=”mce_SELRES_start”></span>

Science Fair Projects for 5th Grade and up

pictured above: Crystal landscapes, Tiny Dancers, Coffee Can Camera Obscura

24. Crystals 3 Ways:

• Overnight Crystals Grow Epsom salt crystals overnight in your refrigerator.
• Crystal Wind Catchers Borax crystals are SUPER easy to grow! Turn them into a lovely dangling wind catcher.
• Crystal Landscapes A more advanced crystal growing experiment using bluing and salt but WOW, these are gorgeous!

25.  Tiny Dancers

These are actually a very simple motor! Kids will learn about electromagnetism by building this motor that can “dance.”

26.  Coffee Can Camera Obscura

Make a simple camera obscura out of an old coffee can.

pictured above: Heat Sensitive Slime, Levitating Pen

27. Heat Sensitive Slime

Click your slime chemistry up a notch by adding in thermochromic paint!

28.  Levitating Pen

Make a pen appear to levitate using a magnet!

29.  Newton’s Cradle

Featured on Dude Perfect! I made one of these for the science fair back in the 1980’s…This science “toy” is mesmerizing for kids and adults alike!

pictured above: Electromagnetic Train, Fake Lung, Articulated Hand

30.  Electromagnetic Train

Incredible display of electricity and magnetism!

31.  Fake Lung

For kids interested in life science and biology, make a model of how our lungs work for the science fair.

32.  Articulated Hand

Another one for biology oriented kids, explore how our joints move by creating an articulated hand.

33. Salty Circuits

In this simple circuit project, kids will create an electrical circuit using salt to conduct electricity and power a light emitting diode (LED).

Are you ready for the science fair?

Whether your child has never participated in the science fair or is an old pro, I hope the science fair projects here will inspire them to have fun, explore science, and get creative the same time.

And if you still need MORE ideas I also have a giant list of chemistry projects for kids that would make amazing science fair starter projects!

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Learn STEM by Doing (and having fun)!

Winning Science Fair Projects [Get Inspired By Past Winners!]

Have you won a science fair project?  Interested in sharing your idea?

What we’ve seen in 100s of winning science fair projects.

First, some projects are more advanced.  Some projects were winners in national science fairs.  However, that doesn’t mean a scaled-down version can’t be tried.  Or, maybe an alternative approach.

Second, many of these science fair projects were completed through a mentorship program.  What’s that??  Many universities offer mentor programs geared towards younger students.  These programs pair students with a research lab and faculty member.  Students do experiments with faculty members.  Check out our STEMium camp listings to see more examples.  Typically, programs recruit high school students.  However, if your student is in earlier grades, keep this in mind and explore opportunities in your area.

Third, a ton of solutions center on climate/environment science.  Very cool!!

Finally, ALL of the projects solve a problem or answer a question.  Read through the list and think about your “every day” problems.  Could you solve one with your own science fair project?

We don’t provide full experimental details –  that’s up to you!  Leave a comment below if you’re stuck on how to get started.  Still not sure where to start??  Feel free to check out our germiest spot in school experiment,   alka-seltzer bottle rockets , or our slime science fair project , which can be done in 1-3 days.  Let’s science!

List of winning science fair projects

• Can air quality be measured with an Arduino device?
• Can plants survive without sunlight?
• Effects of ammonium nitrate concentrations on cold pack temperatures
• Effect of wi-fi signals on the growth of peapods
• How does vitamin C concentration change in cut fruits over time?
• Can ocean acidification be lowered with aquatic plants?
• Examining effects of food on glycemic index after eating
• How does air pollution and weather effect solar cell output?
• What is the effect of more turns in the coil on the amount of electricity created?
• How long can a mechanical pencil lead be before it breaks?
• Can forest fires be predicted using artificial intelligence?
• How strong are bioplastic bags?
• How do different fabrics reduce concentration of polluted air?
• Can water be extracted from humid air?
• Which mouthwash is most effective at killing bacteria?
• Which grows faster: sideways plants vs. upright plants?
• How can microplastics be removed from ocean water?
• What blood pressure monitor gives the most consistent readings?
• What works better for memory retention:  handwriting notes or typing?
• Does text font/color affect user readability?
• How does weather change mood?
• The effects of listening to music while studying
• How do soil types change plant growth rates?
• Can eggshells make plants grow faster?
• Which liquids evaporate faster?
• How does paper airplane design affect speed and distance?
• Which sunglasses offer the best UV protection?
• How does sleep duration affect the body?
• Apple Watch vs. Fitbit vs. Garmin – which wearable offers the best heart rate accuracy?
• How does dog saliva affect bacterial growth?
• How effective are UV lights at killing bacteria?
• Which stain remover removes stains the best?
• Do all crayons have the same melting temperature?
• Measuring sugar content with a laser pointer
• Do more expensive batteries last longer (and are they worth it)?
• Which sunscreen/SPF level provides the best protection?
• Effects of pH on plant growth rates
• Does exercise change body temperature?
• How does iPad use before bed affect sleep?
• Do video games raise your heart rate?
• How does temperature affect magnetic strength?
• Which nail polish lasts the longest?
• How does acid rain effect plants?
• What types of orange juice have the highest vitamin C concentration?
• Can sugar make you focus more?
• Which diaper is best for your baby?
• Do different types of toilet paper have different absorption properties?
• Effect of baking powder on muffins
• Finding which biofuel has the most energy – vegetable oil vs. algae
• How does the catcher influence the pitcher’s accuracy in baseball?
• Effects of hydrogen peroxide on plant germination and growth
• How C. elegans are effected by anti-oxidants and UV light
• Evaluating the 5-second rule
• Does chewing gum improve your concentration?
• How can you win at rock, paper, scissors?
• Effect of baseball bat material on the distance of a hit ball
• Effect of clothing on perceived intelligence
• Can a low-carb diet change cardiovascular markers?
• Which fruit generates the most electricity?
• Are fingerprints hereditary?
• How much fat is in your food?
• Detecting and removing of pesticides from produce
• Which accent is most appealing?
• Which travel mug keeps liquids hot the longest?
• Which brand of bath bomb dissolves the fastest?
• Dog or human: who has the cleaner mouth?
• How salty does water need to be to make an egg float?
• Effect of fabric softener on the flammability of fabric
• Which propeller is best at harnessing the wind?
• How does music type effect customer purchases in a store?
• Can bacterial strains be used to degrade plastics?
• Effects of heat on enzyme activity
• An affordable Braille embosser
• Using a Raspberry Pi-based solar tracker to improve solar panel output
• Pill case reminder system
• Computerized signal for students with ADHD
• Engineering algal bioscrubbers to prevent global warming
• Removing impurities from ground water
• Bacterial strains to create fuel cells
• Facial recognition alert system for Alzheimer’s patients
• Do air temperatures affect candle burning rates?
• Effects of lead in water on yeast
• Testing antimicrobial effects of spices
• Are all forms of phone distraction equal while driving?
• How do shellfish adapt to new environments?
• Are kids that eat school lunches more likely to be obese than students that eat food from home?
• How much bacteria is on your orthodontic retainer?
• Who’s more addicted to a smartphone: parents or kids?
• Do introverts have better memories than extroverts?
• How does color affect eyesight?
• How does noise pollution effect plant growth?
• How effective are homeopathic mosquito repellents?
• Does breakfast improve student performance in the first hour of school?
• What type of dog is most likely to be adopted?
• Effects of sugar/sugar substitutes on yeast energy output
• Hydro-focused battery charging station
• Do deflated footballs go further than fully inflated balls?
• AI-powered tornado detection system
• Effects of sugar on children with ADHD
• EEG-powered remote control car
• How does color affect memory recall?
• Improving conduction in a solar-powered oven
• Smartphone-powered disease diagnostic device (many of these!)
• Adapting window blinds for solar panels

Still not sure what to do??  Look at The Simpson’s science fair projects!

After literally decades on the air, The Simpson’s even covered the science fair!  Plenty of projects to inspire you such as…

Duffless (Season 4, Episode 16)

In our first example, Lisa grows a gigantic tomato with anabolic steroids.  Unfortunately, Bart intervenes, tomato gets destroyed and Lisa must come up with another project.  Her solution:  is my brother dumber than a hamster?

The Genesis Tub (Season 8, Episode 1)

Another Bart/Lisa science fair rivalry, but this time with a Halloween twist.  Her initial project idea is pretty good!  Can soda dissolve a tooth?  However, things go off the rails from there.

E-I-E-I-Annoying Grunt (Season 11, Episode 5)

Final example:  Less of a “traditional” project, but as the Simpsons are hiding out on a farm, Homer decides to try planting crops.  When Marge suggests fertilizer, Homer borrows plutonium from the power plant.  The result – a new hybrid tomato is born!

CONCLUSION:  It’s not whether you win or lose…  it’s how you do your science!

I’ll never forget my younger daughter’s second science fair experience.  She and her partner did a great job brainstorming ideas.  Then, the enthusiasm waned a bit.  Then, it came back!  After ~3 weekends the final project came together.  Overall, the parents really stood back and let them run with things.

While I helped construct a demo volcano, the board was entirely done by them (3rd grader style complete with Christmas lights!).  You might imagine that it might not have been as sharp in quality as others that had more parental assistance.  🙂

You know what?  It didn’t matter…

At the presentation, they knew their stuff!

They clearly communicated their hypothesis, their experimental design, results and conclusions.

Then…

THEY BLEW UP A VOLCANO!!  WOOHOO!!

When they came back to find a 1st place ribbon, the smiles were ear to ear!  Tons of shrieks and giggles!  Winning science fair projects don’t always start that way.  In the end, what’s most important — have a positive experience.

If you’ve won a science fair competition, share your project in the comments and what your winning strategy involved!  Or, if you’re struggling to narrow it down, share some ideas.

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Comparing Wood Pellets for Heat Output and Burn Time Blade Separation and Wind Speed on a Savonius Rotor Windmill Comparing the effect of electrical load on a fuel cell and rechargeable batteries How does ethanol as a fuel compare to today�s conventional fuels? Which building design will best withstand an earthquake? Investigate the desert as a unique biome Create an efficient cold pack using water and different types of fertilizer. Research the history of space exploration and Canada�s contribution. See also: Skip to primary navigation Skip to main content Skip to footer Science Struck Stop Worrying, 7th Grades! Here are 35 Rad Science Fair Topics Making projects for science fair topics for 7th grade is a unique way in teaching children scientific concepts that are difficult to understand. Which is why they must be fun, creative, and easy to try. Like it? Share it! Academics beyond textbooks and classroom walls make a better impact. Science fairs projects are one such kind of learning medium, where the toughest topics can be explained with interesting models and graphical representations. With a little help, any subject can be turned into an eye pleasing science fair project. To make science fair topics for 7th grade worth the effort, let the students pick the topics they like. List of Science Fairs Topics for 7th Grade How does a magnet affect radish plant growth? Does temperature affect the performance of a fuel cell? Which building design will best withstand an earthquake? What techniques do air traffic controllers use to control air traffic? How efficient are these techniques? How does temperature affect the survival rate of aquatic plants? Can animals see in the dark better than humans? Explain how. Does shoe design really affect an athlete’s jumping height? What kind of fertilizers work better? Natural or synthetic? What light brightness makes plants grow the best? How much weight can the surface tension of water hold? Can people tell artificial smells from real ones? How does music affect animal and plant behavior? What is the best way to prevent an ice cube from melting? How is out heart rate affected by the food we eat? What are the terrible effects of acid rain? Can background noise levels affect how well we concentrate? Do antioxidants really improve a human’s life span? How does temperature affect the growth of yeast or mold on bread? Does the species of wood affect the rate at which it burns? How does talking on a cell phone or listening to music affect reaction time? Do we remember a sequence of letters and numbers better if they hear or see the sequence first? What is the importance of breakfast in our lives? How does it affect our metabolism rate? How does music influence learning and memory? Do daily memory-oriented activities slow memory loss at occurs with aging? How does caffeine and nicotine affect bacterial growth? What antibacterial properties do extracts from basil and mint plants have? What effects do garlic and vitamin C have on high blood pressure in people? Does the Atkins high-protein diet really work? How does exercise affect heart rate recovery? How does light affect the vitamin C content of juice? How effective are herbal oils and DEET as mosquito repellents? Can vocal wave form patterns be used to identify individuals? Can computer systems for recognizing human motion be used to counter terrorism? How does sunspot activity affect radio reception? How does the air temperature affect carbon monoxide emissions when a car is first started? Participating in science fair projects encourages the child to read and learn more about myriad subjects. Getting involved in your child’s academics will not only motivate the child but also help you develop a bond of trust and reliability. However, you need to support the child and not do the project for him. Doing the entire project by yourself will make your child handicapped and defeat the whole purpose of the science fair. The above list science fair topics for 7th grade are extremely easy to do. Ask your child to write a script to explain to the viewers what the project is all about. The simpler the script, the easier it is for him to understand and to explain it. Science fair projects help a great deal in explaining scientific concepts in a jiffy. Get Updates Right to Your Inbox Privacy overview. Skip to primary navigation Skip to main content Skip to primary sidebar Teaching Expertise Classroom Ideas Teacher’s Life Deals & Shopping Privacy Policy 7th Grade Engineering Projects: DIYs, Structures, Experiments, And Observations April 8, 2024 //  by  Nicole Muir Theodore Von Karmen said, “Scientists discover the world that exists, engineers create the world that never was.”  Is your child or student interested in designing something new that has never been created before? Many children around the world enjoy making their ideas a reality by building creative inventions. Check our list below to find 7th grade engineering projects that your student can do with common materials to make their ideas into ground-breaking innovations. 1. Solar Oven Your students or child can use common household items to design and build their own solar oven. While learning about how to harness solar energy, they will be able to experiment with their favorite recipes. Learn more: Child Sci Looking for fun and educational kits for teens? Check out our Favorite Subscription Boxes for Teens 2. Helping Hand Everyone can use a helping hand! Check out the link below to learn more about how to construct a prosthetic hand while also learning about human health, biology, and anatomy. Learn more: Science Buddies 3. Paper Roller Coaster You can have your own amusement park in your house or classroom. Starting with paper track segments, your child or student can make curves, straight tracks, loops, or hills and connect them to build an entire amusement park! 4. Life Boat Your child or student can craft a lifeboat and conduct experiments to test its strength while it floats on water. They will use their knowledge of buoyancy, displacement, weight, and measurement as they progress through the designing and hypothesis testing process. Learn more: Teachers Pay Teachers 5. Water Wheel Building a water wheel will showcase an early form of power and ingenuity before we had access to batteries and electricity. This activity has excellent connections to history lessons about how ancient civilizations harnessed their water resources. Learn more: Deceptively Educational 6. Balloon Car Learning about transportation can be a party. By using those left-over balloons, you can power a balloon car using balloon science. You can encourage your 7 th grader to make more than 1 using different designs and race them or race their friends. 7. Marshmallow Catapult Satisfy your sweet tooth by eating some marshmallows and taking on an engineering design challenge by creating a catapult that launches them into the air. Your student and child can conduct many trials to see which design launches marshmallows the farthest. Learn more: DIY Network 8. Leprechaun Trap Leprechauns don’t stand a chance against the leprechaun trap your young learner can put together. This activity can be used around St. Patrick’s Day in March or can be adapted to suit other holidays. Try an Easter bunny trap or Santa trap! Learn more: The Best Ideas for Kids 9. Fire Snake Learn all about chemical reactions by creating a fire snake. If you have 30 minutes to spare and safe space outside, children can experiment with chemical mixtures to learn about carbon dioxide gas and oxygen. 10. Pinball Machine Channel your inner gamer while making a pinball machine. Your young learner will feel like they are in an arcade while using spare cardboard and some creativity. Don’t forget to customize it! Learn more: Make Zine 11. 3D Geometric Gumdrop Structures By simply using candy and toothpicks, your child or students design 3D shapes and then create bigger structures from there. Try out: a cube, a rectangular prism, and a pyramid while not eating too many of your materials! Learn more: Little Bins for Little Hands 12. Straw Rockets Learning about the force of air, drag, and gravity has never been so fun. Children can make predictions and test how far their rocket will go. They can think of strategies to reduce drag to let their rockets fly farther. Learn more: Artsy Fartsy Mama 13. Egg Drop Keep the egg safe by engineering a container to make sure it doesn’t break when dropped from a high distance. The possibilities are endless using everyday items. Challenge your learner to drop their egg from a higher point every time! Learn more: Buggy and Buddy 14. Newton’s Cradle You can reinforce your students’ learning by building a version of Newton’s cradle. This project showcases the principle of conservation of momentum. Assembling simple materials can provide a visual application of this principle to help your child witness science in action. Learn more: Babble Dabble Do 15. Rubber Band Helicopter Soar to new heights with this rubber band helicopter activity. Your student or child will learn about the energy that is contained in the rubber band as they wind up the propeller. They will learn about air resistance and drag. Learn more: Instructables 16. Mini Drone If you are focusing on simple circuits with your young learner, this mini drone is a fantastic way to scaffold their learning as they discuss the wireless communication that occurs between the person and the drone itself. 17. CD Hovercraft Building a CD hovercraft will teach your 7 th grader about high pressure, low pressure, and lift. Your 7 th grader can experiment with successful ways to make their hovercraft hover for a longer period of time. 18. Paper Airplane Launcher Children who are also interested in woodworking may enjoy crafting this paper airplane launcher. They can also experiment with different folding techniques and paperweights to make their paper airplane fly the furthest and fastest. Learn more: Big DIY Ideas 19. Mini Zipline If you are looking for an adventurous activity, designing and constructing a mini zipline is an exciting way to teach your child about slope, acceleration, pulley systems, and friction using hands-on exploration. Learn more: PBS Kids 20. Levitating Ping Pong Ball This is an activity that demonstrates Bernoulli’s Principle. The device allows the ping pong ball to hover in the air above a straw that they blow into. How long can your student keep the ball in the air? Learn more: STEM With The Standards 21. M&Ms in Space Your 7 th grader can design a delivery system and package that will let astronauts snack on M&Ms while they are in space. They can test multiple designs using their materials to see which delivery system and package are ideal. 22. Solar Car If you are teaching your 7th grade science students about solar power, different forms of energy, or the law of conversation of energy, this solar car is a hands-on application that can be customized. Try out different sizes or shapes! Learn more: Home Science Tools 23. Homemade Flashlight Light the way to your child’s learning by helping them to create a simple series circuit flashlight. Your child will learn about electricity and create a useful tool to use the next time there is a blackout. Learn more: Teach Engineering 24. Bubble Blowing Machine Your child can participate in the engineering design process by designing, building, and testing a bubble-blowing machine. This activity can be connected to lessons about molecule layers. How can they create the biggest bubbles? Learn more: Teach Beside Me 25. Seismograph Building a seismograph will allow you to teach, or reinforce, how scientists are able to measure the motion of the ground that occurs while an earthquake is happening. You can also discuss how different amounts of movement create different results. Learn more: Scientific American 26. Lego Water Dam Children can learn about controlling the flow of water by constructing a LEGO water dam. They can make predictions about which of their designs will work best. Doing this project outside will allow for even more fun and learning opportunities! 27. Straw Bridge This activity can support your 7 th grader’s learning about structures, specifically the mechanics behind the designs of bridges. Using a few simple materials, children can meet increasingly difficult challenges to test the best strategies for building the strongest bridges. Learn more: YouTube 28. Make Your Own Kite Children can experiment with different sizes, shapes, and materials to determine which combination is the best to produce a kite that flies the highest out of all the rest. They can record their results. Don’t forget to add a tail! 29. Carnival Ride Bring back memories of going to the carnival while building a ride that is as fun to create as it would be to ride. Challenge your children to incorporate as many moving parts as they can! Learn more: Yuri Ostr 30. Water Clock Measure time by taking note of the inflow and outflow of water. Children will learn about older methods of timekeeping while they construct a device that allows them to measure water lines. Learn more: Nano Girl – STEM Activities for Kids Refer to these activities if you are looking for fun and interactive ways to teach your 7th grader about the scientific method and engineering design process. These projects can be simplified or made to be even more complex as you meet the needs of the specific child or group of children, you are working with. Frequently Asked Questions What is a good science project for a 7th grader. A good 7th grade engineering science project typically includes an experiment that produces observations, which lead to data and results. You can check out the list above for good 7th grade engineering science fair projects . Beyond those listed, some additional ideas include: designing a ball launcher or constructing a water filter system. All Science Fair Projects 1000 science fair projects with complete instructions. 75 Science Fair Projects for 8th Graders Are you looking for an intriguing eighth grade science fair project? We've got you covered with this carefully selected list of science fair projects specifically for eighth graders. 8th Grade Science Fair Project FAQ What are some easy 8th grade science fair projects. Each one of these easy science fair projects is ideal for eighth grade science students to learn important scientific concepts using readily available materials. These are terrific project ideas to get 8th grade students interested in science and have fun doing it! Static Electricity: What's Attracting? The Effect of Temperature on Fingerprints Soap and Surface Tension Bicycle Helmet Shock Absorption Glowing in the Dark Growing Plants from Fragmentation Extracting DNA from Onions Temperature and Solubility Viewing Sunspots Bacteria on Chopping Boards Science fair project details right above the FAQ! What is the best 8th grade science project ever? We think the Extracting DNA from Onions science fair project is awesome for middle school students! This science project aims to demystify DNA by showing how easy it is to extract from onions and what DNA looks like when it's outside of the cell. It's a classic science experiment to learn about DNA and how DNA can be extracted from many kinds of cells. Check out the video on the project page where DNA is extracted from strawberries too! What other fruits and vegetables can you extract DNA from? If you're looking for more 8th grade science projects, check out the 8th grade science fair projects at the top of this page!  Check out more Best Science Fair Projects → What are some cool 8th grade science fair projects? Get ready to be amazed by these super cool science projects for 8th graders! With just a few common items, get ready for have tons of fun with a cool science fair project! Soap Bubbles in Carbon Dioxide Exploring Cave Formations Busting Acne Bacteria What are 5 testable questions for 8th grade? A testable question is a question that we can answer through a science experiment. To do this, we do a control science experiment, then we change one thing in the experiment to see how it affects what happens. This is how we can discover the answer to our question! Eighth grade science students can use the following testable questions for a science fair project. Do detergents affect plant growth? Can drink and food taste different just by changing its color? Does the color of light affect photosynthesis? Does temperature affect seed sprouting? What makes popcorn pop? Here are more testable questions along with their science projects → What are the top 10 science projects for 8th grade? These are our top 10 science projects for 8th grade, with projects from Biology, Chemistry, Physics, Engineering and Environmental Science. These projects can be used as science fair project ideas or as a fun experiment to explore different areas of science! Testing Fabric Types for Water Resistance The Greenhouse Effect Science project details right above the FAQ! Can I do a 8th grade science fair project in a day? Yes! Quick experiments or making a model can be a great option for a science fair project! Since you're short on time, they all use readily available materials. Here are quick science fair project ideas to get you started. The Solar System: See it in the correct scale! Create your own solar system model to scale on the sidewalk and take a walk through space! Solar System Scale Model on the Sidewalk Chromatography reaction: Separating out colors! Have you ever wondered why leaves change color in the fall? Let's find out by using chromatography to separate the colors of a green leaf! Uncovering Fall Colors Heat reactions: Heat speeds things up! Does the temperature of a room affect how quickly a candle burns? Burn Rate of a Candle What are some hands-on ways to find inspiration for my science fair project? There may be free admission days or free passes to a science museum near you! Check your local library for free museum passes, nearby science museums for free entrance days and your credit card for offers. Find a science museum near you and prepare to be awed by all that you can learn there! I always learn something new and am inspired whenever I go to a science museum! How do I start a science fair project? What should I do after I have a science fair project idea? How do I make a science fair board? What is the scientific method? What is the engineering design process? Where can I find a science fair competition? The www Virtual Library: Science Fairs website also has a collection of science fairs from all over the world, as well as national, state, regional, local, and virtual competitions! Classroom Callouts Where Education Meets Fun! 10 Easy Science Fair Experiments for Kids, Parents and Teachers Welcome to our collection of 10 easy science fair experiments for kids ! These hands-on activities are perfect for sparking curiosity and making learning fun. Whether you’re a parent, teacher, or young scientist, these experiments—from erupting volcanoes to DIY lava lamps—are designed to be simple, engaging, and educational. With a little help from an adult, you can dive into the world of science and discover how exciting it can be. 1. Erupting Volcano Experiment Introduction: Welcome to our exciting science fair project—creating your very own erupting volcano! This experiment is perfect for first and second graders to learn about chemical reactions in a fun and spectacular way. You’ll need an adult to help with some steps, so make sure to have a grown-up nearby! Objective: To observe and understand the chemical reaction between baking soda and vinegar that causes a volcanic eruption. 1 small plastic bottle (500 ml) Baking soda (60 grams) Vinegar (200 ml) Dish soap (5 ml) Red food coloring (a few drops) Modeling clay or playdough (enough to cover the bottle and form a mountain) A tray or shallow container (to catch the overflow) Measuring spoons and cups Safety goggles (optional, for extra fun and safety) Hypothesis: Predict what will happen when you mix baking soda, vinegar, and a few other ingredients in your model volcano. Do you think it will erupt like a real volcano? Place the plastic bottle on the tray. This is your volcano’s “magma chamber.” Use the modeling clay or playdough to shape a mountain around the bottle. Leave the top open so you can add your ingredients. Get creative with the shape and details of your volcano! In a separate cup, mix together 200 ml of vinegar, 5 ml of dish soap, and a few drops of red food coloring to create your “lava.” This will help make the eruption more colorful and bubbly. Pour the vinegar mixture into the bottle in your volcano. Add 60 grams of baking soda to the bottle and quickly step back to watch your volcano erupt! Observation: Watch closely what happens when the baking soda meets the vinegar mixture. You should see a foamy and fizzy eruption that looks like lava flowing down the sides of your volcano. Results: Record what you observed. Was the eruption slow and steady, or quick and explosive? How high did the “lava” flow? Conclusion: Explain why the reaction happened using simple science. When baking soda (a base) and vinegar (an acid) mix, they create carbon dioxide gas, which builds up pressure until it forces the liquid out in an eruption. This is similar to what happens in a real volcano, where gases build up pressure underground. Further Experimentation: Try the experiment again using different amounts of vinegar or baking soda. Does changing the amounts change how your volcano erupts? This experiment not only teaches you about chemical reactions but also lets you create a mini spectacle at home or at your science fair. Have fun being a young scientist and remember to clean up after your experiment! 2. Floating Egg Experiment Introduction: Dive into the fascinating world of density with the Floating Egg Experiment! This simple yet intriguing project is perfect for first and second graders to explore how different solutions affect whether an object sinks or floats. This experiment will need a bit of adult help, so make sure you have a grown-up to assist you! Objective: To understand how the addition of salt to water changes its density and affects the buoyancy of an egg. Tap water (about 500 ml) Table salt (about 60 grams) 1 large clear glass or jar Measuring spoons Stirring spoon Hypothesis: Before you begin, think about whether you believe the egg will float in plain water and what might happen when you add salt to the water. Write down your guess. Fill the glass or jar with 500 ml of tap water. Gently place the raw egg into the glass of plain water and observe what happens. Does it sink or float? Remove the egg carefully. Add 60 grams of salt to the water. Stir well until the salt is completely dissolved. Once the salt is dissolved, gently place the egg back into the saltwater solution. Observe what happens this time. Observation: Note down what you see. How does the egg behave in plain water compared to the saltwater? Results: Record your findings. Did the egg float in the saltwater? Was there a difference in how it behaved in the plain water compared to the saltwater? Conclusion: Explain why the results occurred based on density. In plain water, the egg sinks because its density is higher than that of plain water. When you add salt to the water, it increases the water’s density, making it denser than the egg, which now floats. You can experiment further by changing the amount of salt added to the water or trying different liquids like sugar water. See how these changes affect the egg’s buoyancy. This experiment not only teaches you about the principles of density and buoyancy but also shows you how different solutions can change the behavior of objects in water. Have fun experimenting, and remember to ask questions and think about why things happen the way they do! 3. Rainbow Milk Experiment Introduction: Get ready to create a swirling rainbow with the Rainbow Milk Experiment! This visually stunning project is ideal for young scientists in the first or second grade to explore the effects of soap on milk and food coloring. You’ll need some help from an adult, so be sure to have one nearby! Objective: To observe how dish soap interacts with the fat in milk, causing movement in the food coloring that creates a rainbow effect. A shallow dish or plate Whole milk (enough to cover the bottom of the dish) Food coloring (various colors) Cotton swabs A dropper or small spoon Hypothesis: Think about what you expect to happen when you add dish soap to the milk with food coloring. Do you think the colors will move, mix, or stay still? Write down your guess. Pour enough whole milk into the dish to just cover the bottom. Carefully add drops of different food coloring to the milk. Place them around the dish but not too close to each other. Dip a cotton swab into dish soap, ensuring it’s not dripping but wet with soap. Gently touch the soaped swab to the surface of the milk in the center of the dish or near one of the food coloring drops. Observation: Watch what happens when the soapy cotton swab touches the milk. Look for any movement of the food coloring and how it interacts with the milk. Results: Record what you see. Describe the movement and mixing of the colors. How did the dish soap affect the behavior of the food coloring in the milk? Conclusion: Explain the science behind what you saw. The soap breaks the surface tension of the milk and reacts with its fats, creating movement that pushes the food coloring around. This movement shows how substances like soap can change the physical properties of other liquids like milk. Try the experiment again using different types of milk (like skim or 2%) to see if the fat content affects the reaction. You can also use different detergents or soaps to see if they cause different patterns or movements in the milk. This experiment is not only a beautiful display of colors but also a great lesson in chemistry and physics, showing how different substances interact in surprising and colorful ways. Enjoy creating your milk art, and don’t forget to clean up when you’re done!  4. Baking Soda and Vinegar Rocket Introduction: Blast off into the world of chemical reactions with the Baking Soda and Vinegar Rocket Experiment! This exciting activity is perfect for first and second graders eager to see science in action. You’ll need some adult supervision, so make sure a grown-up is ready to help with the fun! Objective: To demonstrate the reaction between baking soda and vinegar and observe how this reaction can propel a homemade rocket. 1 small plastic film canister with a tight-fitting lid (or any small container with a pop-on lid that seals well) Baking soda (5 grams) Vinegar (30 ml) Tissue paper Safety goggles (to protect your eyes) An open space for launching your rocket (like a backyard or park) Hypothesis: Predict what will happen when baking soda and vinegar mix inside your rocket canister. Think about how it might affect the canister and what the reaction will be like. Write down your prediction. Go outside or to a well-ventilated area where you can safely launch the rocket. Wrap the 5 grams of baking soda tightly in a small piece of tissue paper. This packet will help delay the reaction, giving you time to close the lid. Pour 30 ml of vinegar into the film canister. Quickly drop the baking soda packet into the canister with vinegar. Snap the lid on tightly and quickly place the canister on the ground, lid side down. Step back and watch what happens! Observation: Observe the canister as the reaction happens. What do you see and hear? How high does the rocket go? Results: Record the outcome of your experiment. Was the launch successful? How high did your rocket fly? Did it happen as you predicted? Conclusion: Explain why the rocket moved. The reaction between baking soda (a base) and vinegar (an acid) produces carbon dioxide gas. This gas builds up pressure inside the canister until the lid pops off, pushing the rocket into the air. This is an example of Newton’s Third Law of Motion: for every action, there is an equal and opposite reaction. Experiment with different amounts of vinegar and baking soda to see if it affects how high your rocket goes. You can also try different sizes of containers to see how they change the reaction. This experiment is not only a thrilling demonstration of a chemical reaction but also a fun way to learn about forces and motion. Make sure to conduct it in a safe environment and wear your safety goggles to protect your eyes. Enjoy your scientific journey into rocketry! 5. Magnetic Magic – Magnetic Poles and Fields Experiment Introduction: Explore the invisible world of magnetism with this engaging experiment! Perfect for first and second graders, this activity will help you understand how magnets work, focusing on the poles and the magnetic fields they create. You’ll need some common items from home or school and the help of an adult to guide you through. Objective: To explore and visualize the magnetic field lines around bar and horseshoe magnets and understand the interactions between the different poles of magnets. 1 bar magnet (with North and South poles labeled) 1 horseshoe magnet (with North and South poles labeled) Iron filings A sheet of white paper A tray or cardboard to contain any mess A compass (optional, for further exploration) Hypothesis: Before you start, think about what you might see when you sprinkle iron filings around the magnets. What do you think will happen when the North pole of one magnet is near the South pole of another? Write down your guess. Place the sheet of white paper on the tray or cardboard to keep your workspace clean. Lay the bar magnet and the horseshoe magnet on the paper. Start with them a good distance apart so their fields don’t overlap immediately. Gently sprinkle iron filings around and between the magnets. Be careful not to bump the table as the filings align themselves along the magnetic field lines. Look at how the iron filings arrange themselves around each magnet. Notice the patterns they form. These lines show the magnetic fields emanating from the poles. Slowly move the North pole of one magnet towards the South pole of the other. Observe how the iron filings react. Do the same with like poles (North to North or South to South) and note any differences. Observation: Record what happens to the iron filings as you move the magnets. How do the patterns change? What does this tell you about how the magnetic poles interact? Results: Describe the arrangement of iron filings and what it indicates about the magnetic fields. Note any changes when different poles are near each other. Conclusion: Explain your observations in terms of magnetic poles and fields. Magnets attract when opposite poles are near each other and repel when like poles are close. The iron filings align themselves along the lines of magnetic force, visibly showing the shape of the magnetic fields. Try using a compass to see how the needle aligns with the magnetic fields. You can also test different materials to see if they are influenced by the magnets, like clips, aluminum foil, or copper wire. This experiment not only teaches you about magnetism but also lets you see the invisible forces at play. Have fun exploring and always make sure to clean up your space when you are done! 6. DIY Lava Lamp Experiment Introduction: Ready to light up your curiosity with a colorful DIY Lava Lamp? This experiment is fantastic for young scientists in first or second grade to explore the interactions between oil, water, and effervescent tablets. This safe and simple project is sure to dazzle and teach important scientific concepts with a bit of adult help. Objective: To understand the effects of density and chemical reactions by creating a homemade lava lamp. 1 clear plastic bottle (1 liter) Water (about 400 ml) Vegetable oil (about 600 ml) Food coloring (any color you like) Effervescent tablets (like Alka-Seltzer) Flashlight (optional, for effect) Hypothesis: Think about what will happen when you mix oil, water, and the effervescent tablet in the bottle. Predict how the ingredients will interact and what will happen when you add the tablet. Fill the clear plastic bottle with 400 ml of water. Slowly pour 600 ml of vegetable oil into the bottle, allowing it to layer on top of the water. Add a few drops of food coloring to the bottle. The drops will pass through the oil and mix with the water below. Break an effervescent tablet into a few pieces. Drop one piece into the bottle and watch as the lava lamp effect begins. The tablet reacts with the water to create gas bubbles that rise and fall through the oil. Shine a flashlight through the bottom of the bottle to enhance the visual effect, especially in a dim room. Observation: Watch the bubbles of colored water rise and fall in the oil as the gas bubbles form and pop. Note how the oil and water do not mix. Results: Describe what you see when the effervescent tablet reacts in the water and how it affects the oil and water mixture. Conclusion: Explain the science behind the lava lamp. The water and oil separate due to their different densities, with oil being less dense and sitting on top of the water. The effervescent tablet reacts with the water to create carbon dioxide gas, which carries the colored water up through the oil until the gas escapes at the top. Try using different amounts of oil or water, different colors of food coloring, or different types of effervescent tablets to see how it changes the reaction. This experiment not only makes for an eye-catching display but also helps understand concepts like density, solubility, and gas formation. Have fun watching your very own lava lamp glow!  7. Dancing Raisins Experiment Introduction: Get ready to watch raisins dance in this fun and simple science experiment perfect for young students in first or second grade. This activity demonstrates the principles of buoyancy and gas production in a way that’s both entertaining and educational, with just a bit of adult supervision needed. Objective: To observe and understand why raisins move up and down in a fizzy liquid due to the formation of gas bubbles. 1 clear glass or transparent plastic cup Plain water (enough to fill the glass three-quarters) Carbonated clear soda (enough to fill the glass) Several raisins (4-6) A stopwatch or timer (optional, to record the duration of the dance) Hypothesis: Before starting, predict what will happen when you drop raisins into the soda. Do you think they will sink, float, or dance? Write down your guess. Fill the glass three-quarters with plain water and top it off with carbonated soda to make the liquid fizzy. Carefully drop 4 to 6 raisins into the glass of fizzy liquid. Watch what happens to the raisins for the next few minutes. Observe how they move in the glass. Results: Record your observations. Do the raisins sink, float, or dance up and down? How long do they continue moving? Conclusion: Explain the results using the concept of buoyancy and gas production. The carbon dioxide bubbles from the soda attach to the rough surface of the raisins, making them buoyant enough to rise to the surface. Once they reach the top, the bubbles pop, and the raisins sink again. This cycle repeats, causing the dancing effect. Experiment with different carbonated drinks or try other small, dried fruits or objects like corn kernels or small pasta shapes to see if they also dance. Explore how temperature affects the rate of dancing by using cold versus room temperature soda. This experiment is a fantastic way for kids to visually grasp scientific concepts and enjoy the magic of simple chemical reactions. It’s perfect for a science fair project or a classroom activity! 8. Color-Changing Carnations Introduction: Discover how flowers drink water with the Color-Changing Carnations Experiment! This visually stunning activity is perfect for first and second graders to learn about plant biology and capillary action in a fun and colorful way. It’s a simple experiment that requires some adult supervision. Objective: To demonstrate how plants absorb water and nutrients up through their stems, using carnations and colored water. White carnations (several, depending on how many colors you want to test) Clear glasses or vases (one for each color) Food coloring in various colors Scissors (to be used by an adult) Hypothesis: Predict what will happen when the carnations are placed in colored water. Which colors do you think will show up best in the petals? Have an adult trim the stems of the carnations at an angle to allow them to absorb water more efficiently. Fill each glass or vase with water and add about 20 drops of food coloring to each, choosing different colors for each container. Stir the water to evenly distribute the color. Place one carnation in each colored water vase. Observe the carnations daily to see how the color travels up the stem and changes the color of the petals. Results: Record your observations over several days. Note the changes in the color of the petals and how quickly each color appears. Conclusion: Explain how capillary action works in plants, drawing water and nutrients up through tiny tubes in the stem. The food coloring shows this process visually, changing the color of the carnations’ petals. Try using different liquids like sports drinks or diluted inks to see if they affect the flowers differently. Experiment with other white flowers to see if they absorb colors faster or slower than the carnations. 9. Invisible Ink Introduction: Send secret messages with the Invisible Ink Experiment! This project is a fantastic way for first and second graders to learn about chemical reactions and the properties of acids and bases, with just a bit of adult supervision for safety. Objective: To use a natural acid (lemon juice) to write invisible messages that appear only when heated. Spoon or brush White paper Heat source (light bulb or hair dryer; an adult should handle this part) Hypothesis: Guess what will happen when you heat the paper that has lemon juice on it. How do you think the message will appear? Squeeze lemon juice into a bowl and add a few drops of water. Dip the spoon or brush into the lemon juice mixture and write a message on the white paper. Allow the paper to dry completely, making the message invisible. Have an adult help you heat the paper using a light bulb or hair dryer. Watch as the message slowly appears. Results: Record what happens when the paper is heated and how clearly the message shows up. Conclusion: Explain why the lemon juice message appears when heated (lemon juice, being acidic, weakens the paper fibers slightly and caramelizes when heated, making it visible). Experiment with other natural acids like orange juice or vinegar. Try different heating methods or papers to see which reveals the message most effectively. 10. Homemade Slime Experiment Introduction: Get ready for gooey fun with the Homemade Slime Experiment! This engaging and tactile project is great for first and second graders to learn about polymers and non-Newtonian fluids. Adult supervision is recommended, especially when handling chemicals. Objective: To create slime using simple household ingredients and explore its unique properties. White school glue (about 120 ml) Borax powder (2 teaspoons) Water (two cups) Food coloring (optional) Mixing bowl Hypothesis: Predict what will happen when you mix glue, borax, and water. What kind of texture do you think your slime will have? In a mixing bowl, combine 120 ml of white glue and one cup of water. Add a few drops of food coloring if desired. In another container, dissolve 2 teaspoons of borax in one cup of warm water. Slowly add the borax solution to the glue mixture, stirring continuously. Keep stirring until the slime begins to form and pull away from the sides of the bowl. Take the slime out and knead it with your hands until it reaches the desired consistency. Results: Describe the texture and behavior of your slime. Is it stretchy? Does it bounce? Conclusion: Discuss the chemical reaction between the glue and borax that creates a polymer, which gives the slime its unique properties. Try adding different amounts of borax or glue to see how it changes the slime’s properties. Add glitter, beads, or small toys to create different types of slime. Each of these experiments offers a fun, educational way to engage with basic scientific concepts, perfect for young learners eager to explore the world through science. That’s a Wrap! Science is all about curiosity, discovery, and having fun while learning how the world works. Through these 10 experiments, young scientists have not only created colorful reactions and gooey slime but also gained a deeper understanding of important scientific principles. Whether it was watching a volcano erupt, making an egg float, or exploring the magnetic fields, each experiment has shown that science is everywhere—even in the simplest things around us. As you continue to explore and experiment, remember that the journey of discovery is just beginning. Keep asking questions, keep experimenting, and most importantly, keep having fun with science! Science Printables for your First Graders Don’t forget to pin the image below to save this post! Need help Breaking Down the 1st Grade Math Standards? Leave a Reply Cancel reply Your email address will not be published. Required fields are marked * Notify me of follow-up comments by email. Notify me of new posts by email. Worksheets Printable Science fair ideas for seventh grade. 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You can consider these ... 72 Science Projects for 7th Graders What are some easy 7th grade science fair projects? Each of these science fair projects are easy for seventh grade science students do. Explore how glow-in-the-dark sticks work, discover how far apart planets really are, and make your own geode crystal with borax! Chocolate Asphalt. Making Lightning in a Pan. Glow Sticks: Temperature Effects 30 Ideas For 7th Grade Science Fair Projects 7. Make A Slime Bomb. This science fair project is best done with an adult or older kid. You will want to find out what chemicals to use for the slime (you can search the internet for that) and then make it. It is best if you have a friend who knows how to make slime with you, too! 8. 7th Grade Science Fair Projects: Experiments, Model Building, Research Collect and measure biofilm for your 7th grade science fair project. Pick a small container or surface you want to observe, submerge it in water for 2 weeks, and see what cool bacterial growth happens. Check out the link here to get started! Learn More: The Homeschool Scientist. 7. High Voice Helium 43 of the Best 7th Grade Science Projects and Experiments No sweat. We have you covered. Check out our list of 43 science projects and experiments that you can try with your 7th graders this month. Yeast Metabolism with and without Aeration | Sciencebuddies.org - Grades 6-8 Biology experiment that evaluates the effects of glucose metabolism in yeast. Aspirin Absorption in Carbohydrate Solutions ... 17 Best Science Fair Projects for 7th Grade Help your 7th grader select the best science fair idea, then step back and watch your scientist shine! In this post, we've assembled 17 great science fair project ideas for 7th grade. We link each project description to its original source, where you can get more information and step-by-step instructions. Science Fair Projects on Earthquakes. 15 Fascinating Science Experiments for 7th Graders Whether it's for the science fair, extra credit, or just exploration, there are plenty of fantastic science experiments that seventh graders can do. Here's a roundup of 15 fascinating science experiments for 7th graders or any child of any age really who is interested in discovering something new!! These are some of the best experiments ... Science Fair Projects & Experiments for Grade 7 If you're searching for science projects for science fair projects and experiments in 7th grade, you're in right place! Keep your learning spirit alive with our curated list of science fair projects and experiments like teabag rocket, greenhouse effect & global warming, burning calories, acids & bases, water purifying, making a barometer, students who love […] 30+ Science Fair Projects That Will Wow The Crowd Bleeding Blossoms Explore capillary action and absorption in this science meets art project. Magical Water Blossoms Make beautiful blossoming paper flowers with the help of absorption. This project has a simple wow moment that everyone enjoys watching. 12. 10 Fun 7th Grade Science Projects Instructions and materials for these 7th grade science and engineering projects are available on our website:1. Magnetic Accelerator: https://www.sciencebudd... Winning Science Fair Projects [Get Inspired By Past Winners!] What we've seen in 100s of winning science fair projects. First, some projects are more advanced. Some projects were winners in national science fairs. However, that doesn't mean a scaled-down version can't be tried. Or, maybe an alternative approach. Second, many of these science fair projects were completed through a mentorship program. Top 10 7 grade science fair projects ideas and inspiration Find and save ideas about 7 grade science fair projects on Pinterest. PDF Last Minute Science Fair Projects For 7th Grade Last Minute Science Fair Projects For 7th Grade Joyce Henderson,Heather Tomasello Last-minute Science Fair Projects Sudipta Bardhan-Quallen,2008-08-11 Provides instructions for science projects that can be done in the span of a week or two, a few short days, or 24 hours or less. Last Minute Science Fair Ideas - Due in a Week or More… Award Winning 7th Grade Science Fair Projects Award Winning 7th Grade Science Fair Projects for Students and Teachers. 7th Grade Award Winning Science Fair Projects Projects by Grade Level. 1st: 2nd: 3rd: 4th: 5th: 6th: 7th: 8th: 9th: 10th: 11th: 12th: Home: ... Award Winning 8th Grade Science Fair Project Examples: Projects Home: Primary School Elementary School Middle School High School ... Stop Worrying, 7th Grades! Here are 35 Rad Science Fair Topics The above list science fair topics for 7th grade are extremely easy to do. Ask your child to write a script to explain to the viewers what the project is all about. The simpler the script, the easier it is for him to understand and to explain it. Science fair projects help a great deal in explaining scientific concepts in a jiffy. Making ... 7th Grade Science Fair Project Ideas Sep 27, 2023 - Explore Tora Borealis's board "7th Grade Science Fair Project Ideas" on Pinterest. See more ideas about science fair, science, fair projects. 7th Grade Engineering Projects: DIYs, Structures, Experiments, And What is a good science project for a 7th grader? A good 7th grade engineering science project typically includes an experiment that produces observations, which lead to data and results. You can check out the list above for good 7th grade engineering science fair projects. Beyond those listed, some additional ideas include: designing a ball ... 7th grade science fair ideas Jan 20, 2020 - Explore mandy tomatore's board "7th grade science fair ideas" on Pinterest. See more ideas about science fair, science for kids, science experiments kids. 75 Science Fair Projects for 8th Graders These are our top 10 science projects for 8th grade, with projects from Biology, Chemistry, Physics, Engineering and Environmental Science. These projects can be used as science fair project ideas or as a fun experiment to explore different areas of science! Extracting DNA from Onions. 10 Easy Science Fair Experiments for Kids, Parents and Teachers Welcome to our collection of 10 easy science fair experiments for kids!These hands-on activities are perfect for sparking curiosity and making learning fun. Whether you're a parent, teacher, or young scientist, these experiments—from erupting volcanoes to DIY lava lamps—are designed to be simple, engaging, and educational. Science Fair Ideas For Seventh Grade 10 stylish seventh grade science fair project ideas 2024Fair science grade 7th project winners seventh elementary franklin benjamin title examples famous swat team do need water submarines fins Science projects grade easy fair 7th seventh kidsSeventh grade science fair. Check Details. Third Grade Science Experiments Our third grade projects are written and tested by scientists and are specifically created for use by students in the third grade. Students can choose to follow the science experiment as written or put their own spin on the project. For a personalized list of science projects, third graders can use the Science Buddies Topic Selection Wizard ... homework paper phd project resume review speech study thesis