
100 Science Fair Projects For 7th Graders
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!
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Plant some seeds and watch them grow! See how the number of plants affects their growth rate.
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Create your own miniature lightning bolt with a pie plate, pen, thumb tack, wool sock, and styrofoam!
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Have you ever seen a bubble that's made of air instead of water? Learn how to make your own underwater antibubbles!
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Learn how soil can act like an electrical system and how it can be used to attract and hold plant nutrients.
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Let's explore how temperature affects the light from glow sticks!
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Ever wonder why some birds have long beaks and others have short ones? Let's find out!
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Let's find out if cooking fruits and vegetables depletes their Vitamin C content!
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Get your hands messy with this mysterious substance! Is it a liquid or a solid? Mix, squish and play to uncover its secrets!
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Discover the incredible power of lemons! With lemons and basic materials, you can create an eco-friendly battery that powers an LED light!
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See colors magically move in milk with soap! This fun experiment demonstrates surface tension in a vivid way!
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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!
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Get ready to become a candy-making scientist! Grow your own giant sugar crystals and make rock candy you can eat!
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Curious about pet rocks? Make some and learn about the rock cycle in the process!
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How hard is that rock? You can learn how to classify your own rocks by their hardness just like geologists!
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Make delicious rock formations using Starbursts! Learn how the earth makes rocks in a tasty way.
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Make your own sparkling geode rock crystals at home with Borax and see science in action!
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Discover how to make your own sedimentary, metamorphic, and igneous rocks using crayons!
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Have you ever heard of rocks made of chocolate? Learn how rocks can be turned into a sweet treat in this delicious science project!
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Make your own sparkling rainbow crystals at home with Borax and see science in action!
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Create your own solar system model to scale on the sidewalk and take a walk through space!
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Have you ever wondered how wind affects plants? In this experiment, you'll find out by comparing two plants in different wind conditions.
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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!
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Does physical activity before an exam help you do better?
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With just a few simple steps, creating a cloud in a jar can help us understand the process of cloud formation!
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Have you ever wondered how temperature affects fingerprints? Find out in this science project!
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Have you ever wondered how to make glow-in-the-dark stickers glow longer?
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Can you keep ice from melting without a cooler box? Find out how reflective containers can help!
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Let's find out which beverage leaves the most stains on our teeth!
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Can sea water help or hurt bamboo plants? Find out in this experiment!
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Do you like your food hot or cold? Find out how temperature affects your taste buds in this fun experiment!
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Have you ever wondered how long soap bubbles can stay afloat in carbon dioxide? Let's find out!
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Let's explore how temperature affects the amount of substances that can be dissolved in water!
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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!
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Discover how stalactites and stalagmites form in caves with this fun experiment!
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Learn how to build bridges that can hold a lot of weight using triangles and squares!
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Find out if you have the lungs of an athlete by testing your lung capacity with the water displacement method!
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Take a journey into a drop of water and explore the five kingdoms of life!
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Join us on an adventure to explore the different kinds of insects living on three different species of trees!
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Discover how different types of plants can affect the biodiversity of a region!
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Find out if boys have a higher or lower lung volume than girls in this fun experiment!
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Let's explore how much water plants lose through transpiration and see if bigger leaves mean more water loss!
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Does the temperature of the classroom affect how well students do on tests? Find out in this science project!
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Do you want to know how your lungs change as you get older? Find out by doing this science project!
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Can you tell the difference between regular fat and low fat food? Find out in this fun science project!
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Have you ever wondered what kind of bacteria is living in your toothbrush? Find out in this science project!
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Let's compare two types of light bulbs to see which one is brighter and uses less power!
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Can you build a house that can withstand an earthquake? Find out by testing different building materials in this science project!
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Do you want to know which water repellent works best? Find out by comparing Rain-X and Aquapel in this science project!
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Can you tell which smoke detector is better at detecting smoke? Find out in this science project!
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Can you tell the difference between natural and synthetic scents? Put your nose to the test and find out!
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Can vegetable oil help keep soil moist? Find out in this science project!
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Does a balanced golf ball make a difference in your putt? Find out in this science project!
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Can a balloon filled with water withstand fire? Find out in this fun science project!
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Let's explore how salt crystals form and how adding different ingredients can affect the size of the crystals!
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Hot days can make your car feel like an oven, but reflective sunshades can help keep the temperature down. Let's find out how!
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Do women have more foot problems than men? Find out in this fun science project!
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Does the color of your hair affect the amount of static electricity it produces? Find out in this fun science project!
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Do you want to know which fabric keeps you the warmest? Find out in this science project!
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Can tea leaves help plants grow faster? Find out in this science project!
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Find out which skateboard bearings will make your skateboard travel the furthest!
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Have you ever wondered what would happen if you put a boiling hot can in cold water? Find out in this science project!
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Learn how different types of fertilizers affect the nitrate content in runoff water!
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Are sponge filters more effective than under-gravel filters? Find out in this science project!
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Do you have what it takes to be an athlete? Find out if your ring finger is longer than your index finger!
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Does the type of tennis court surface affect the speed of the ball? Find out in this science project!
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Let's explore how the boiling point of water changes in different conditions!
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Does caffeine help plants grow faster? Find out by watering mung beans with water, caffeine solution, and coffee mixture and measuring the growth!
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Does the type of stadium affect how far a baseball can be hit? Find out in this fun science project!
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Can you figure out which metal conducts heat the best? Put your science skills to the test and find out!
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Can you make fabric waterproof? Find out by testing different fabrics with and without Scotch Guard!
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Let's explore how the shape of a boat's bow affects the amount of water resistance it experiences!
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Find out which type of soil retains the most water in this fun science project!
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Does Coca Cola really dissolve meat? Find out in this science project!
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Does the temperature of a room affect how quickly a candle burns? Find out in this science project!
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Learn how temperature affects the viscosity of water, milk, and corn oil!
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Have you ever wondered how different thermometers measure body temperature? Find out in this science project!
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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!
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Can natural substances like borax and vinegar keep termites away? Find out in this science project!
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Let's find out what happens when baby food is left out of the fridge for different amounts of time!
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Does your pup have a paw preference? Find out with this fun science project!
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Let's find out how carbohydrates affect the rate of aspirin dissolution!
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Do aircraft make more noise when taking off or when landing? Find out in this fun science project!
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Do Microban chopping boards have fewer bacteria on their surfaces? Find out in this science project!
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Are you left-handed? Do you have the ability to use both hands equally well? Let's find out!
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Let's find out how football helmets protect players from head injuries by testing the pressure of the padding inside the helmet!
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Does temperature affect how long a battery lasts? Find out in this fun science project!
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What happens when oil spills on water? Does it affect the plants living in the water? Let's find out!
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