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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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Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.
Chemistry
Second Grade
Science fair project that models the effect of global warming on the ocean's circulation.
Physical Science
Middle School
This science fair project examines whether ocean water can be made safe to drink.
Chemistry
Middle School
In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.
Physics
Fifth Grade
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.
Physics
Sixth Grade
In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.
Chemistry
Third Grade
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.
Physics
First Grade
Is temperature a requirement for solar energy uses? This project tests this theory and examines the amount of usable sunlight for solar-energy applications.
Physics
Middle School
Will increasing the amount of salt in water effect how slow or fast the water freezes?
Chemistry
Third Grade
Looking for a way to keep your kid busy during the long, hot days of summer? These science projects will spark your young learner's curiosity going into the new school year. What's more, conducting an experiment or two is a great way to take your mind off the sweltering temperatures!
Physical Science
Elementary School
This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.
Chemistry
Elementary School

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