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Science Fair Project Ideas

Find the physical science and weather and climate 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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In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!
Self-Inflating Balloons
Chemistry
Elementary School
This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.
How to Create a Visual Doppler
Physics
Fourth Grade
This science experiment explores why leaves change color in the fall and the role of photosynthesis in leaf coloration.
Why Do Leaves Change Color in the Fall?
Chemistry
Middle School
This science fair project idea for advance middle and high school students explores to identify whether light is polarized and orientation of the light waves.
How to Control the Transmission of Polarized Light?
Physics
Middle School
Get this physics science project idea for advance middle school and high school students to find What Happens to a Current-Carrying Wire in a Magnetic Field?
What Happens to a Current-Carrying Wire in a Magnetic Field?
Physics
Middle School
Here's a cool and fun science fair project idea for middle school students on the working of a filter and experimenting with filters to send secret messages.
How to use Colored Filters to Send Secret Messages
Physical Science
Physics
This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.
How to Stop Soda From Exploding
Chemistry
Elementary School
This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.
Does Length Have an Effect on Speed?
Physics
Elementary School
This science fair project idea compares the mass and density of objects.
Examining Mass And Density Of Popped And Unpopped Popcorn
Physical Science
Elementary School
The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.
Balancing Act: How does Gravity Affect Balance?
Physics
Elementary School
In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.
How Well Does Sound Travel Through a Gas? A Liquid? A Solid?
Physical Science
Physics
What is an optical illusion? Optical illusion is your eyes is playing trick. Do this free science fair project and experiment with creating optical illusion.
Create an Optical Illusion
Physical Science
Physics
Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.
Meat Science!
Chemistry
Fifth Grade
Here is a cool and free middle school science fair project idea on how passive solar heating works and how to design and experiment with your own solar cooker.
Solar Heating and Designing of a Solar Cooker
Physical Science
Physics
Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.
Snow to Liquid Ratio
Weather and Climate
Second Grade

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