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1000 Science Fair Projects with Complete Instructions

100 Science Fair Projects For 7th Graders

100 Science Fair Projects For 7th Graders

Looking for engaging 7th grade science fair projects? Our handpicked collection of science fair projects for 7th graders is a great place to start!

Hamsters and Time of Day
Do you want to know when hamsters are most alert? Find out by timing how long it takes a hamster to negotiate a maze at different times of day!
Medium
Plant Density and Growth Rate
Plant some seeds and watch them grow! See how the number of plants affects their growth rate.
Medium
Chocolate Asphalt
Make your own asphalt pavement with chocolate and other ingredients!
Easy
Human Body Battery
Create an electric current using your own body!
Medium
Making Lightning in a Pan
Create your own miniature lightning bolt with a pie plate, pen, thumb tack, wool sock, and styrofoam!
Medium
Making Antibubbles
Have you ever seen a bubble that's made of air instead of water? Learn how to make your own underwater antibubbles!
Hard
Soil as an Electrical System
Learn how soil can act like an electrical system and how it can be used to attract and hold plant nutrients.
Hard
Glow Sticks: Temperature Effects
Let's explore how temperature affects the light from glow sticks!
Medium
Bird Beaks: What They Tell Us
Ever wonder why some birds have long beaks and others have short ones? Let's find out!
Easy
Does Cooking Deplete Vitamin C?
Let's find out if cooking fruits and vegetables depletes their Vitamin C content!
Medium
How to Make Oobleck: Is it a Liquid or Solid?
Get your hands messy with this mysterious substance! Is it a liquid or a solid? Mix, squish and play to uncover its secrets!
Easy
Electricity from a Lemon
Discover the incredible power of lemons! With lemons and basic materials, you can create an eco-friendly battery that powers an LED light!
Easy
Magic Milk Painting
See colors magically move in milk with soap! This fun experiment demonstrates surface tension in a vivid way!
Easy
Static Electricity: What's Attracting?
Have you ever wondered what materials have the most static electricity? Find out by rubbing a balloon on different materials and counting how many pieces of paper it attracts!
Medium
Rock Candy: Sweet Science
Get ready to become a candy-making scientist! Grow your own giant sugar crystals and make rock candy you can eat!
Easy
My Pet Rock in the Rock Cycle
Curious about pet rocks? Make some and learn about the rock cycle in the process!
Medium
Rock Hardness Challenge
How hard is that rock? You can learn how to classify your own rocks by their hardness just like geologists!
Medium
Starburst Rock Cycle
Make delicious rock formations using Starbursts! Learn how the earth makes rocks in a tasty way.
Easy
Geode Rock Borax Crystal
Make your own sparkling geode rock crystals at home with Borax and see science in action!
Easy
Crayon Rock Cycle
Discover how to make your own sedimentary, metamorphic, and igneous rocks using crayons!
Easy
The Chocolate Rock Cycle
Have you ever heard of rocks made of chocolate? Learn how rocks can be turned into a sweet treat in this delicious science project!
Easy
Sparkling Rainbow Crystal
Make your own sparkling rainbow crystals at home with Borax and see science in action!
Easy
Solar System Scale Model on the Sidewalk
Create your own solar system model to scale on the sidewalk and take a walk through space!
Medium
Windy Wonders: Plant Growth
Have you ever wondered how wind affects plants? In this experiment, you'll find out by comparing two plants in different wind conditions.
Easy
Color and Taste
Do you think the color of a beverage affects how it tastes?
Medium
Uncovering Fall 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!
Medium
Can Exercise Improve Test Scores?
Does physical activity before an exam help you do better?
Medium
Growing Mold
What kinds of food does mold grow fastest on?
Easy
Plastic Milk
Make your own plastic milk from household items!
Easy
Cloud in a Bottle
With just a few simple steps, creating a cloud in a jar can help us understand the process of cloud formation!
Easy
The Effect of Temperature on Fingerprints
Have you ever wondered how temperature affects fingerprints? Find out in this science project!
Medium
Bicycle Helmet Shock Absorption
Do more expensive bicycle helmets absorb more shock?
Medium
Glowing in the Dark
Have you ever wondered how to make glow-in-the-dark stickers glow longer?
Medium
Slowing Ice Melting with Reflective Containers
Can you keep ice from melting without a cooler box? Find out how reflective containers can help!
Medium
Staining Teeth with Beverages
Let's find out which beverage leaves the most stains on our teeth!
Easy
Hand-Eye Coordination and Age
Does age affect how well you can catch a ball?
Medium
Acidifying Our Oceans
Let's explore how carbon dioxide affects the acidity of our oceans!
Medium
Acid Rain and Guppies
Can acid rain hurt guppies?
Medium
The Effects of Sea Water on Bamboo
Can sea water help or hurt bamboo plants? Find out in this experiment!
Medium
How Temperature Affects Taste
Do you like your food hot or cold? Find out how temperature affects your taste buds in this fun experiment!
Medium
Soap Bubbles in Carbon Dioxide
Have you ever wondered how long soap bubbles can stay afloat in carbon dioxide? Let's find out!
Medium
Temperature and Solubility
Let's explore how temperature affects the amount of substances that can be dissolved in water!
Medium
Do Singers Have Bigger Lungs?
Do you have what it takes to blow up a balloon bigger than your friends? Find out if singers have bigger lungs than non-singers!
Medium
Exploring Cave Formations
Discover how stalactites and stalagmites form in caves with this fun experiment!
Medium
Building Strong Bridges
Learn how to build bridges that can hold a lot of weight using triangles and squares!
Medium
Are You Fit?
Find out if you have the lungs of an athlete by testing your lung capacity with the water displacement method!
Easy
Exploring the Kingdoms of Life
Take a journey into a drop of water and explore the five kingdoms of life!
Medium
Investigating Insects on Trees
Join us on an adventure to explore the different kinds of insects living on three different species of trees!
Easy
The Impact of Plant Communities
Discover how different types of plants can affect the biodiversity of a region!
Medium
Gender Differences in Lung Capacity
Find out if boys have a higher or lower lung volume than girls in this fun experiment!
Medium
Investigating Water Loss in Plants
Let's explore how much water plants lose through transpiration and see if bigger leaves mean more water loss!
Medium
Temperature and Performance
Does the temperature of the classroom affect how well students do on tests? Find out in this science project!
Medium
Examining Lung Capacity and Age
Do you want to know how your lungs change as you get older? Find out by doing this science project!
Medium
Tasting the Difference
Can you tell the difference between regular fat and low fat food? Find out in this fun science project!
Medium
Bacteria in Your Toothbrush
Have you ever wondered what kind of bacteria is living in your toothbrush? Find out in this science project!
Medium
Comparing Incandescent and LED Lamps
Let's compare two types of light bulbs to see which one is brighter and uses less power!
Medium
Testing Building Materials in Earthquake-Prone Areas
Can you build a house that can withstand an earthquake? Find out by testing different building materials in this science project!
Medium
Comparing Water Repellents
Do you want to know which water repellent works best? Find out by comparing Rain-X and Aquapel in this science project!
Medium
Smoke Detector Showdown
Can you tell which smoke detector is better at detecting smoke? Find out in this science project!
Medium
Can You Smell the Difference?
Can you tell the difference between natural and synthetic scents? Put your nose to the test and find out!
Medium
Retaining Soil Moisture with Vegetable Oil
Can vegetable oil help keep soil moist? Find out in this science project!
Medium
Balanced Golf Balls
Does a balanced golf ball make a difference in your putt? Find out in this science project!
Medium
Fire-Resistant Balloons
Can a balloon filled with water withstand fire? Find out in this fun science project!
Medium
Exploring Salt Crystals
Let's explore how salt crystals form and how adding different ingredients can affect the size of the crystals!
Medium
Cool Cars: Reflective Sunshades
Hot days can make your car feel like an oven, but reflective sunshades can help keep the temperature down. Let's find out how!
Medium
Foot Problems in Men and Women
Do women have more foot problems than men? Find out in this fun science project!
Medium
Static Electricity and Hair Color
Does the color of your hair affect the amount of static electricity it produces? Find out in this fun science project!
Medium
Keeping Warm with Fabric
Do you want to know which fabric keeps you the warmest? Find out in this science project!
Medium
Tea Leaves and Plant Growth
Can tea leaves help plants grow faster? Find out in this science project!
Medium
Skateboard Bearings: How Far Will They Go?
Find out which skateboard bearings will make your skateboard travel the furthest!
Medium
Crushing the Can
Have you ever wondered what would happen if you put a boiling hot can in cold water? Find out in this science project!
Medium
Nitrate Leaching by Fertilizers
Learn how different types of fertilizers affect the nitrate content in runoff water!
Medium
Comparing Aquarium Filters
Are sponge filters more effective than under-gravel filters? Find out in this science project!
Medium
Finger Length and Athletic Ability
Do you have what it takes to be an athlete? Find out if your ring finger is longer than your index finger!
Medium
Tennis Court Surfaces
Does the type of tennis court surface affect the speed of the ball? Find out in this science project!
Medium
Temperature and Magnets
Let's explore how temperature affects the strength of magnets!
Medium
Boiling Point of Water
Let's explore how the boiling point of water changes in different conditions!
Medium
Caffeine and Plant Growth
Does caffeine help plants grow faster? Find out by watering mung beans with water, caffeine solution, and coffee mixture and measuring the growth!
Medium
Baseball Batting: Indoor vs. Outdoor
Does the type of stadium affect how far a baseball can be hit? Find out in this fun science project!
Medium
Heat Transfer: Copper vs. Steel
Can you figure out which metal conducts heat the best? Put your science skills to the test and find out!
Medium
Testing Fabric Types for Water Resistance
Can you make fabric waterproof? Find out by testing different fabrics with and without Scotch Guard!
Medium
Investigating the Influence of a Ship's Bow on Water Resistance
Let's explore how the shape of a boat's bow affects the amount of water resistance it experiences!
Medium
Soil Types and Water Retention
Find out which type of soil retains the most water in this fun science project!
Medium
The Dissolving Meat Myth
Does Coca Cola really dissolve meat? Find out in this science project!
Medium
Burn Rate of a Candle
Does the temperature of a room affect how quickly a candle burns? Find out in this science project!
Medium
Comparing Rodent Learning
Can hamsters and mice learn? Find out in this fun experiment!
Medium
Temperature and Viscosity
Learn how temperature affects the viscosity of water, milk, and corn oil!
Medium
Temperature and Thermometers
Have you ever wondered how different thermometers measure body temperature? Find out in this science project!
Medium
Can Nasal Dilators Stop Snoring?
Does your snoring keep you or your family up at night? Find out if nasal dilators can help you get a better night's sleep!
Medium
Natural Pesticides and Termites
Can natural substances like borax and vinegar keep termites away? Find out in this science project!
Medium
Investigating Baby Food Contamination
Let's find out what happens when baby food is left out of the fridge for different amounts of time!
Medium
Paw Preference in Dogs
Does your pup have a paw preference? Find out with this fun science project!
Medium
Aspirin Absorption in Carbohydrate Solutions
Let's find out how carbohydrates affect the rate of aspirin dissolution!
Medium
Aircraft Noise: Take Off vs. Landing
Do aircraft make more noise when taking off or when landing? Find out in this fun science project!
Medium
Bacteria-Busting Chopping Boards
Do Microban chopping boards have fewer bacteria on their surfaces? Find out in this science project!
Medium
Left-Handed Ambidexterity
Are you left-handed? Do you have the ability to use both hands equally well? Let's find out!
Medium
Investigating Football Helmets
Let's find out how football helmets protect players from head injuries by testing the pressure of the padding inside the helmet!
Medium
Color and Blood Pressure
Let's explore how different colors can affect our blood pressure!
Medium
Battery Life and Temperature
Does temperature affect how long a battery lasts? Find out in this fun science project!
Medium
Oil Spills and Aquatic Plants
What happens when oil spills on water? Does it affect the plants living in the water? Let's find out!
Medium

7th Grade Science Fair Project FAQ


What are some easy 7th grade science fair projects?

Any one of these easy 7th grade science fair projects will teach you important scientific concepts and help you have fun while learning. An easy science fair project is a great way to introduce the wonders of science to 7th graders!

  • Chocolate Asphalt

  • Making Lightning in a Pan

  • Glow Sticks: Temperature Effects

  • Bird Beaks: What They Tell Us

  • Does Cooking Deplete Vitamin C?

  • Solar System Scale Model on the Sidewalk

  • Color and Taste

  • Uncovering Fall Colors

  • Growing Mold

  • Glowing in the Dark

Science fair project details right above the FAQ!


What is the best 7th grade science project ever?

We love the Fast Food Nutrition science fair project for 7th graders. This project challenges students to explore the nutritional value of fast food that's easily available. By investigating what's in these meals and interviewing people about their eating habits, they can learn a lot about what we're putting into our bodies.

If you're looking for more 7th grade science projects, check out the 7th grade science fair projects at the top of this page! 

Check out more Best Science Fair Projects


What are some cool 7th grade science fair projects?

Get ready to be amazed by these super cool science projects for 7th graders! With just a few simple things, you can be fascinated by science and have tons of fun with these cool 7th grade science projects!

  • Glowing in the Dark

  • Solar System Scale Model on the Sidewalk

  • Chocolate Asphalt

  • Making Lightning in a Pan

  • Glow Sticks: Temperature Effects

  • Bird Beaks: What They Tell Us

  • Does Cooking Deplete Vitamin C?

  • Color and Taste

  • Uncovering Fall Colors

  • Growing Mold

Science fair project details right above the FAQ!


What are 5 testable questions for 7th 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!

  • 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 7th grade?

These are our top 10 science projects for 7th grade, with projects from Biology, Chemistry, Physics and Engineering. These projects can be used as science fair project ideas or as a fun experiment to explore different areas of science!

  • Hamsters and Time of Day

  • Plant Density and Growth Rate

  • Chocolate Asphalt

  • Human Body Battery

  • Making Lightning in a Pan

  • Making Antibubbles

  • Soil as an Electrical System

  • Glow Sticks: Temperature Effects

  • Bird Beaks: What They Tell Us

  • Does Cooking Deplete Vitamin C?

Science project details right above the FAQ!


Can I do a 7th grade science fair project in a day?

Yes! Quick experiments or making a model can be a great option for a science fair project! If you want to do a quick science fair project, we have science project ideas on various topics 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?

Science museums are great places to explore if you're looking for inspiration for your next science fair project or just want to learn more about science. Science museums, natural history museums, space museums, and discovery museums are all great places to do that! You can discover all sorts of interesting things about science and find cool project ideas for science fairs.

Don't worry about how much it costs to get into the science museum, as there may be free admission days or free passes to a science museum near you! Check your credit card for offers, your local library for free museum passes, and nearby science museums for free entrance days.

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?

Science fair projects are a fun and unique way to discover science by asking a question and doing a science project. We'll help you find a science fair project idea and guide you through the process of doing and presenting your science fair project with Science Fair Coach's Science Fair Project Guide.


What should I do after I have a science fair project idea?

If you have a science fair project idea, Science Fair Coach can help you turn it into a full science fair project! Starting at Science Fair Coach's Guide to the Scientific Method, we'll guide you through every step of the scientific method, from designing and conducting your experiment to collecting and analyzing your findings. Then, we'll help you showcase your results on a science fair board for others to learn from and enjoy.


How do I make a science fair board?

Your science fair board is where you show off your science fair project for everyone to see and learn from. With Science Fair Coach's step-by-step guide, you can make sure your science fair board stands out and impresses at the science fair!


Where can I find a science fair competition?

Science fair competitions are an excellent opportunity to explore science. One of the of the premier science advocacy organizations, the Society for Science, is associated with more than 400 science fair competitions in almost every US state, as well as over 70 other countries, regions, and territories. You can find out if there's a Society of Science affiliated science fair near you!

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!

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