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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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What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.
Tenth Grade
Physics
Science fair project that compares leaf pigments of various tree species. Which tree species do you think will have the most pigments and why?
Seventh Grade
Eighth Grade
Can you stain teeth with tea, coffee, or coke? Explore how in this science fair project idea.
Sixth Grade
Seventh Grade
In this cool psychology experiment, study how companies air commercials to strategically advertise to viewers who will buy their products.
Ninth Grade
Psychology and Sociology
Research is dependent upon the idea that sample sizes are generally representative of a population...but is this true? Test the assumption with M&Ms!
High School
Middle School
In this science fair experiment, high school students fit the growth pattern of bacteria to a mathematical model and predict future colony expansion.
High School
Applied Science
How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.
Ninth Grade
Geology
This science project examines the thermal properties of several major greenhouse gases.
High School
Earth & Space Science
Demonstrate the relationship between mass, volume and density. Measure displaced water, and weigh object to calculate mass and density.
Tenth Grade
Eleventh Grade

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