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Elementary School Physical Science - Science Fair Project Ideas

Great selection of elementary school science fair project ideas. These science fair projects can help you find elementary school level ideas for your science fair.

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Crayons aren't just good for creating colorful masterpieces -- they're also great for science!
Melting Crayons
Chemistry
Third Grade
How powerful is the reaction between baking soda and vinegar? Find out here!
Baking Soda and Vinegar Balloon
Chemistry
Third Grade
Do Temperature and Humidity Affect How Long Static Charges Last?
Elementary School
Physics
Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.
Cooking Oil Smoke Points
Chemistry
Fifth Grade
Get down to the rubber with this science project that tests the effectiveness of different types of erasers.
Eraser Test
Physical Science
Second Grade
Discover whether a metal will expand under hot water.
Does Water Temperature Cause Metal to Expand and Contract?
Elementary School
Chemistry
Do different types of oil mix or stack? Find out in this science fair project idea!
Do Different Types of Oil Mix or “Stack”?
Chemistry
Second Grade
This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.
Slinky: Metal vs. Metal
Elementary School
Physical Science
This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.
Does Liquid Weigh More after Freezing and Boiling?
Elementary School
Physical Science
This science fair project idea explores whether white light can be separated into different colors.
Can White Light Be Separated?
Elementary School
Physical Science
In this free science fair project idea, we make our own megapinchers levers to help us lift and move objects, and we learn about different classes of lever
Megapinchers: How Do Levers Reduce The Force You Apply To Them?
Elementary School
Physics
This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.
Retrograde Mode
Elementary School
Physics
In this free science fair project idea we learn about how the human arm is a third-class lever.
Human Machine: How is Your Forearm Like a Third-Class Lever?
Elementary School
Physics
An object is falling to the ground, can you catch it before gravity pulls it to the ground? Do this free science fair project and explore this question.
Oops: How Long Does it Take You to Catch a Falling Object?
Elementary School
Physics
This science fair project idea experiments with spinning color wheels and optical illusions.
A Trick for the Eyes: Color Wheels and Optical Illusion Tops
Elementary School
Physics

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