In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Test your friends to find out if you can replicate the placebo effect's incredible results.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

This science fair project idea demonstrates that plants give off water.

Science fair project that examines condensation and the conditions needed in order for dew to form.

This science fair project idea investigates how the shape of an object affects drag.

This project determines what category of person is most likely to be ticklish.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

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

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.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

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.

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

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

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

Is it a square or a circle? See if you can trick your friends with this zany science project!

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

This science fair project idea investigates whether air has mass and weight.

This science fair project idea's objective is to become familiar with items your family regularly throws in the trash.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

The project investigates how water and movement affects erosion.