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

In this science fair project, young children notice and track changes in trees throughout the year.

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

What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

This middle school science fair project evaluates test subjectsâ ability to determine what a person is feeling by reading their facial microexpressions.

This science project involves comparing the relative effectiveness of salt, pepper and dehydration in food preservation.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

This project examines Newton's First and Second Laws of Motion with a bicycle and water balloons.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

This science fair project determines if the allelopathic chemical produced by the black walnut tree biodegrades immediately or persists over several days.

This project compares the strength of one, two, and three-ply toilet paper.

This cool air pressure demonstration has kids break a ruler using only a newspaper and atmospheric pressure.

Determine whether the relationship between a personâs armspan and height are genetic.

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.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

Kids will enjoy this cool demonstration of Newton's Third Law and the conservation of linear momentum.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Science fair project idea helps conceptualize probability. Compare probabilities and outcomes of cards drawn from a standard playing deck.

Evaluate whether people can raise the temperature of their finger using the power of their thoughts.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Think about the adaptive utility of an important aspect of our physiology.

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

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

This experiment will explore if and where fractals can be found in the natural world.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

Time to look at our faces! Are they symmetrical or asymmetrical? Find out in this science fair project idea.