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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 46 to 60 of 105
This science fair project idea uses the process of chemical weathering to change a mineral.
Elementary School
Easy
The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.
Sixth Grade
Physics
This science fair project idea produces consumable fresh water from salt water through desalination.
Elementary School
Easy
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
What if the shape of the Earth weren't spherical? How does its shape affect our gravity, climate, and tides? Model these questions in this cool project!
Seventh Grade
Ecology
With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.
First Grade
Easy
In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.
Fourth Grade
Earth & Space Science
Will increasing the amount of salt in water effect how slow or fast the water freezes?
Third Grade
Chemistry
This experiment will explore the possibility of a connection between lunar cycles and how humans are affected.
High School
Earth & Space Science
Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.
Third Grade
Fourth Grade
Science fair project that determines whether algae can be made to grow by feeding it supplementary carbon dioxide.
Sixth Grade
Seventh Grade
This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.
Elementary School
Fourth Grade

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