The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

In this science project, the center of gravity is explored.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

This science fair project idea teaches to understand and explore the concepts of crystal formation and dissolving substances.

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

The project investigates how friction affects motion by using different surface textures.

In this project, sunlight is blocked from a leaf in order to see the affect that sunlight has on leaves.

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

This science experiment has students test whether a snail moves faster on concrete or dirt.

In this project, the affect of acid rain is simulated by the acid, vinegar.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

In this project, waves of vibrations are experimented with using water in glasses.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

This science fair project idea explores the egg's thin membrane.

This science fair experiment idea's objective is to understand the general concept of an acid and a base.

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 idea examines the reason boats are shaped and engineered.

This science fair project idea explores how length affects the weight a bridge can hold.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

This science fair project idea investigates how magnetism can defy the force of gravity.

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

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

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

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?