Search 4th Grade Physical Science Science Projects

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

This science fair project idea explores whether talking to a plant will help it grow.

This science fair project idea produces varying pitches of sound.

This science fair project idea produces sounds by creating vibrations using different objects.

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?

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.