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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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In this free science fair project idea, we learn about rock layering and how the geological process of horizontal layering occurs.
Middle School
Earth & Space Science
Get a cool science fair project idea on various climatic seasons and find out the reasons why summer has the hottest and longest days.
Elementary School
Weather and Climate
In this science project, you will demonstrate the greenhouse effect and you will discover how materials of the Earth's surface affect the greenhouse effect.
Middle School
High School
In this free science fair project idea, we learn about fronts and how they move about and affect the weather.
Middle School
Earth & Space Science
In this free science fair project, learn how oxygen changes rock into an orange or reddish brown colors.  Use Education.com for science fair project ideas!
Elementary School
Geology
Science fair project that determines which types of clouds are best at blocking harmful UV radiation.
Sixth Grade
Seventh Grade
In this free science fair project idea, we learn about the Greenhouse Effect and how it keeps us warm on a global scale.
Middle School
Earth & Space Science
In this free science fair project idea, we demonstrate and analyze the effects of erosion on crustal material.
Middle School
Earth & Space Science
In this science fair project, you will learn the differences between coarse-, medium-, and fine-textured soils.
Middle School
High School

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