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.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

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.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

This science fair project teaches students the differences between fruits and vegetables.

This science fair project examines how seeds hitchhike on animals and clothing.

This science fair project teaches students about wilting and browning of salad greens.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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

This science fair project idea investigates if webbed feet help a duck (and others) swim.

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

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

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

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

Learn about this simple machine and make a pulley of your own to use for fun science trials.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

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

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

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

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?