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

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

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 idea examines the reason boats are shaped and engineered.

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

This project explores ways to prevent static electrical shocks.

This fun science fair project idea helps students learn how acid rains are formed and explore how acid rain damages the environment.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

The project investigates which soft drink is worse for your teeth by observing the affect of soft drink on limestone.

Explore if planting seeds in a certain direction will affect how fast it germinates.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Check out this cool science fair project on identifying rocks and minerals for kids.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.