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.

This science fair project investigates why the number of visible stars changes from place to place.

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

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.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

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

This science fair project idea examines whether boys and girls differ in reflexes.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

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

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

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

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

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.

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.

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 cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

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 measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

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

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.