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Fourth Grade Science Fair Project Ideas

Building off of what they learned in 3rd grade, 4th graders add a new level of sophistication to their 4th grade science projects. In addition to describing data quantitatively, kids begin to use their observations to formulate scientific arguments and engage in scientific debate. 4th grade science fair projects may involve kids going beyond testing a hypothesis—young scientists can be encouraged to use their results to make predictions about what might happen when the experiment is expanded to test new variables. Education.com's selection of fourth grade science fair project ideas are carefully written with 4th graders in mind, giving them the tools they need to effectively learn about the world around them by pursuing the answers to their questions in a methodical way.

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Examine the effect of pressure on carbonation in soda.
Fourth Grade
Chemistry
This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.
Fourth Grade
Physical Science
This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.
Fourth Grade
Electricity and Magnetism
The objective of this science fair project idea is to  determine if sound travels best through the air, water or a solid.
Fourth Grade
Physics
How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!
Fourth Grade
Physical Science
Take a dive into the candy jar with this yummy science experiment.
Fourth Grade
Chemistry
This science fair project idea explores substances that cause a bubble to last longer.
Fourth Grade
Chemistry
This science fair project idea produces varying pitches of sound.
Fourth Grade
Physical Science
Check out this fun science fair project idea to determine the effect of temperature on carbonation in soda.
Fourth Grade
Physical Science
Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.
Fourth Grade
Chemistry

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