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Search 3rd Grade Physical Science Science Projects
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3rd grade
Physical Science
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Talking to Plants
Science Project
Talking to Plants
This science fair project idea explores whether talking to a plant will help it grow.
3rd grade
Science
Science Project
Light Intensity and Distance
Science Project
Light Intensity and Distance
In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!
3rd grade
Science
Science Project
A Thunderous Sound
Science Project
A Thunderous Sound
Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?
3rd grade
Science
Science Project
Speaking Under Water
Science Project
Speaking Under Water
Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.
3rd grade
Science
Science Project
Mental Mix Up: Experimenting with Your Ability to Focus
Science Project
Mental Mix Up: Experimenting with Your Ability to Focus
Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.
3rd grade
Science
Science Project
Baking Soda and Vinegar Balloon
Science Project
Baking Soda and Vinegar Balloon
How powerful is the reaction between baking soda and vinegar? Find out here!
3rd grade
Science
Science Project
How A Kazoo Makes Sounds
Science Project
How A Kazoo Makes Sounds
How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.
3rd grade
Science
Science Project
How to Separate Salt from Water
Science Project
How to Separate Salt from Water
In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.
3rd grade
Science
Science Project
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