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.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

This classic children's game demonstrates how sound travels through air vs. through a solid.

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

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

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

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

Word color association is just a fancy way to talk about the way we connect colors with words.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

In this fun experiment, we'll find out how color affects heat absorption!

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.