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Science Fair Project Ideas

Find the physical science and microbiology science fair project ideas you're looking for. Many different science fair projects are available for you to browse through and get ideas for your own science fair project.

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This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.
The Speed of Sound on a String
Physical Science
Physics
This project examines whether corked bats truly make a ball travel farther than wooden bats that haven't been altered.
Does it Pay to Cheat in Baseball?
Physical Science
Physics
This science fair project idea explores the fastest average speed a human can talk.
How Fast Can You Talk With Accuracy?
Physical Science
Middle School
The objective of this science fair project is to observe the properties of friction and apply this knowledge to search for a near-frictionless surface.
The Ultimate Rollercoaster
Physics
Middle School
Check out this fun science fair project idea that recreates one of the most significant experiments in which Thomas Young demonstrated that light is a wave.
Explore if Light Behaves as a Wave or a Particle
Physics
Middle School
Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.
Understanding Absorption
Chemistry
Third Grade
This science fair project examines whether ocean water can be made safe to drink.
Making Salt Water Drinkable
Chemistry
Middle School
Demonstrate how to tell the age of an egg without having to crack it open.
How Can You Tell The Age Of An Egg Without Cracking It Open?
Physical Science
Elementary School
Looking for a fun project on energy? Check out this fun elementary school science fair project idea that demonstrates chemical energy in a bottle.
Chemical Energy in a Bottle
Physical Science
Elementary School
Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.
Why Doesn't the Ocean Freeze?
Chemistry
Second Grade
In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.
What Lives in the Air Conditioner?
Microbiology
Third Grade
This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.
Homemade Lava Lamp
Chemistry
Elementary School
What is osmosis? How does osmosis work? What determines the rate of osmosis rate? Do this free science fair project to explore these questions.
Determine How the Concentration of a Salt Solution Affects the Rate of Osmosis
Physical Science
Chemistry
Build a very basic model of electric motor in this cool science fair project idea for middle and high school students.
Building a No-Frills Motor
Physics
Middle School
Construct batteries that make electricity from fruits with this fun science fair project.
Make Electricity From Fruits
Electricity and Magnetism
Elementary School

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