High School Science Fair Projects

Need a science fair project that's fun, engaging, and appropriately rigorous for a high school science fair? 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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The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.
Physical Science
Twelfth Grade
Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.
Seventh Grade
Science fair project that determines which materials cause the most friction by sliding blocks of wood down a ramp.
Physical Science
Seventh Grade
Many substances are compounds of different elements. This experiment combines iodine and zinc to make zinc iodide.
High School
Physical Science
In this experiment, you experiment with laser jet toner, a magnetic fluid, as it moves, bubbles, and forms unique shapes.
High School
Physical Science

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