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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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Showing 16 to 30 of 101
Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.
High School
Middle School
This science project examines the thermal properties of several major greenhouse gases.
High School
Earth & Space Science
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
Science fair project that compares the relative carbon dioxide concentrations of various gases, including different types of vehicle emissions.
Seventh Grade
Eighth Grade
Is your kid crazy about science? Check out this selection of advanced science projects that revolve around the sun.
High School
Science Fair Project Ideas
Science fair project that examines the biodiversity of ant populations in various locations.
Ninth Grade
Tenth Grade
Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.
Fifth Grade
Sixth Grade
Science fair project idea that compares number and relative sizes of leaf stomata. Collect leaves of plant species, identify, observe stomata with microscope.
Ninth Grade
Tenth Grade
Science fair project that observes hemoglobin synthesis in the small crustacean species Daphnia Magna.
Ninth Grade
Tenth Grade
Science fair project which compares the rates of photosynthesis for various light sources. Which type of light will be best for photosynthesis and why?
Seventh Grade
Eighth Grade
Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.
Fifth Grade
Sixth Grade
Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.
Fifth Grade
Sixth Grade
Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.
Seventh Grade
Eighth Grade
Science fair project which compares the quantity of cells in the different phases of mitosis by observing the cells of an onion root tip.
Ninth Grade
Tenth Grade

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