Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

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

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

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

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

In this project, different brands of microwave popcorn are tested and compared.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

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

This science fair project idea determines which method of hand cleansing is the most effective.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Science fair project that determines whether mass and weight are the same or different.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Learn whether writing things down really makes things easier to remember.

Find out whether matte or shiny nail polish lasts longer.

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

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

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.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.