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

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 simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

This science fair project idea investigates the hardness property of minerals.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

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 teaches kids experimental design and how to test if subjects can really sense if they are being watched.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

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

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

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

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Start your toy engines -- this is going to be a fast and friction-filled race!

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

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

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

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

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

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!