4th Grade Physical Science Projects

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

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

Check out this fun science fair project idea to determine the effect of temperature on carbonation in soda.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

This science fair project idea investigates the difference in reaction times between boys and girls.

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.

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

This science fair project idea provides evidence that air is everywhere and takes up space.

This science fair project idea explores the different properties of matter.

This science fair project idea produces varying pitches of sound.

This science fair project idea explores the different parts of the human ear and models how the human ear reacts to sound waves.

This science fair project idea determines what household items are good conductors of electricity.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

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

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

This science fair project idea investigates how magnetism can defy the force of gravity.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.