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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.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

People have favorite flavors, but what about ants? Which ant food is the most popular?

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

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

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

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!

This science fair project idea investigates whether plants can survive being frozen.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

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.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

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

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

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

Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

Learn how different types of soil affect how animal tracks form in this experiment!

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

In this science fair project, young children notice and track changes in trees throughout the year.

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

Construct and experiment with a periscope using reflected light rays to gather an image.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.