This science fair project idea's objective is to understand the concept of air pollution and examine the quality of air in our environments.

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

This project investigates the affect of storage temperature on microwave popcorn.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

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

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

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

The objective of this science fair project is to investigate salt water density.

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

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

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

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.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

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

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

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

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 examines how seeds hitchhike on animals and clothing.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

In this project, a magnet is used to collect iron from breakfast cereals.