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Science Fair Project Ideas

Education.com has assembled a vast collection of science fair project ideas written by science teachers, professional scientists, and educational consultants on popular science fair topics ranging from physics and chemistry to biology and even sociology. We offer free science fair ideas suitable for every grade level, be it preschool, kindergarten, elementary school, middle school, or high school. Check the boxes in the sidebar to filter your results, or use the search bar to find that perfect science fair project or experiment your child will be sure to love.

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Showing 76 to 90 of 182
In this fun experiment, we'll find out how color affects heat absorption!
Fifth Grade
Weather and Climate
Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?
Second Grade
Third Grade
Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.
Ninth Grade
Weather and Climate
Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.
Second Grade
Physics
In this science fair project, you'll make a 'ghost' appear in a test tube, and learn about what happens when hot water and cold water interact.
Elementary School
First Grade
How fast is the wind blowing? This science experiment provides step-by-step instructions to help you answer this question.
Middle School
Electricity and Magnetism
Science fair project that guides you through how to test the humidity in the environment using a homemade psychrometer.
Sixth Grade
Easy
In this free science fair project idea, we model what a comet looks like.
Elementary School
Astronomy
In this free science fair project idea, we learn about how friction in the atmosphere causes meteors to become hot.
Elementary School
Astronomy

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