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

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

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

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

This science fair project idea determines if the temperature of rubber effects how high it bounces.

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

Discover flight initiation distance as you play around in the park with this fun bird watching project!

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

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 idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

This science fair project idea demonstrates that plants give off water.

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

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

Test whether plants can grow without sunlight and water.

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

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

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

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.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

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

Discover whether cold or hot water from the faucet will boil faster on the stove.

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

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.

This biodiversity project examines the biodiversity in your own backyard.

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

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

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

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

People have favorite flavors, but what about ants? Which ant food is the most popular?