This science fair project idea investigates the difference in reaction times between boys and girls.

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

This science fair project idea produces sounds by creating vibrations using different objects.

This science fair project idea determines which method of hand cleansing is the most effective.

Construct and experiment with a periscope using reflected light rays to gather an image.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

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

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

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

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

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

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

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

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

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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.

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

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

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.