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High School Science Fair Projects

Need a science fair project that's fun, engaging, and appropriately rigorous for a high school science fair? Education.com has assembled a rich collection of high school science fair projects and high school science fair project ideas written by our team of professional scientists, science teachers, and educational consultants. We offer free high school science experiments on every science fair topic, including physics, chemistry, biology, engineering, and even psychology. Check the boxes in the sidebar to filter your results, or use the search bar to find a winning idea for your upcoming science fair. Hundreds of good science fair projects are only a click away.

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In this experiment, you will find out how human error can cause faults in any science task. This includes experiments conducted by famous scientists also.
High School
Physical Science
This science fair experiment organizes made-up elements to simulate Mendeleev when he made the periodic table of elements.
High School
Physical Science
This science fair project compares the allelopathic chemical produced by the Black Walnut tree to a commercial herbicide in stopping the growth of a shrub.
High School
Physical Science
This experiment will explore if a randomly iterated algorithm will result in a pattern.
High School
Physics
Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).
Physics
Middle School
This experiment examines if space objects become round after reaching a certain mass.
High School
Physics
Test the combustion of different types of woods.
High School
Chemistry
Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.
High School
Chemistry
Explore the best way to store popcorn kernels. It examines the impact of moisture and temperature on unpopped kernels.
High School
Chemistry
In this experiment, you will be making your own paper flashlight by conducting electricty with graphite.
Physical Science
Seventh Grade

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