This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

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

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

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.

Challenge your learner to design and build a city of their own in this creative engineering activity.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

Do different types of oil mix or stack? Find out in this science fair project idea!

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

This science fair project idea experiments with spinning color wheels and optical illusions.

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.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

This science fair project idea examines the reason boats are shaped and engineered.

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