This science fair project idea provides evidence that air is everywhere and takes up space.

This science fair project idea produces sounds by creating vibrations using different objects.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

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

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

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.

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

Teach your child how butter is created by shaking up cream the old-fashioned way.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

An home science experiment for older students that teaches about the science behind heat.

This science fair project idea determines the most effective method of preserving food.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

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.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

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.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

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

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

This science project idea examines the effect of microwaving on various objects.

Take a dive into the candy jar with this yummy science experiment.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

This science fair project idea is develops new or improved paper making techniques and encourages recycling.