In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

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 the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

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

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

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

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.

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

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

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

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

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

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

This science fair project idea explores whether white light can be separated into different colors.

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

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

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

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

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.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

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

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

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!