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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 61 to 73 of 73
Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.
Third Grade
Fourth Grade
Science fair project which determines whether the depth of a boat in the water changes how fast it moves and how straight it sails.
Fifth Grade
Sixth Grade
Determine how salinity affects the circulation of warm and cold water. Note whether the warm water mixes or forms a layer with cold water.
Middle School
Hard
Examine the influence of the phase of the moon on moisture capillarity in garden soil. Measure and record the depth at which water is first detected.
Middle School
Hard
The projects describes the correlation between Gravel Run and Centreville Landing in terms of pH, dissolved oxygen, turbidity, and temperature.
Middle School
Ecology
Study the effects of wind and temperature on evaporation. Place wet sponges in different environments, check at regular intervals, track time required to dry.
Middle School
Medium
This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.
Third Grade
Fourth Grade
Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.
Elementary School
Easy
How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.
Second Grade
Easy
This science fair project idea discovers the practical applications for the structural design of a snail shell.
Medium
Hard

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