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Physical Science Projects & Project Ideas

Our team of professional scientists, science teachers and educational consultants has put together an excellent collection of free physical science projects for kids. These include physics science fair projects, science experiments, and demonstrations that help kids explore the world of classical mechanics, as well as other great physical science topics: our hair-raising magnet and electricity experiments are sure to spark your child's scientific curiosity. Whether you’re looking for science fair project ideas for your child’s upcoming science fair or your little one simply loves conducting physical science experiments, Education.com’s physical science section is a fantastic free resource.

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In this free science fair project idea, we learn how to polarize light waves in a specific direction.
Physics
Electricity and Magnetism
For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.
Electricity and Magnetism
Second Grade
By dropping a magnet through a copper tube, kids observe the cool (and bizarre) braking effect produced by the eddy currents predicted by Lenz's law.
Physics
Electricity and Magnetism
In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.
Electricity and Magnetism
Chemistry
Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.
Physics
Electricity and Magnetism
How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!
Electricity and Magnetism
Fifth Grade
Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.
Electricity and Magnetism
Fifth Grade
Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.
Physical Science
Electricity and Magnetism
The purpose of this science fair project is to build a basic radio.
Electricity and Magnetism
Elementary School
This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.
Electricity and Magnetism
Fourth Grade
In this free science fair project idea, we learn about how reaction speed and reflexes vary between individuals and based on different factors.
Electricity and Magnetism
Physics
The purpose of this science fair project is to prove that mealworms exposed to an electromagnetic field will develop more quickly.
Electricity and Magnetism
Middle School

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