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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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Is temperature a requirement for solar energy uses? This project tests this theory and examines the amount of usable sunlight for solar-energy applications.
Middle School
High School
Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.
Third Grade
Fourth Grade
In this science fair project, students use hot and cold water to simulate what happens when a warm front meets a cold one.
Middle School
Seventh Grade
When there are dark clouds, rain is expected but how do raindrops begin? Do this free science fair project and explore the formation of raindrops.
Elementary School
Earth & Space Science
Explore how wind is produced and get a demonstration on the cooling effect of wind in this breezy science fair project idea.
Elementary School
Easy
In this free science fair project idea, we learn about different forms of precipitation, such as snow, snowflakes and rain, and why they occur.
Middle School
Earth & Space Science
Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.
Fifth Grade
Sixth Grade
How does cloud form and what causes its formation? Do this free science fair project and see how and why clouds form.  Great project for elementary students.
Elementary School
Earth & Space Science
How do you measure the speed of wind?  It's measured using an anemometer. This free science project will teach you how to make an anemometer.
Elementary School
Earth & Space Science

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