Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

This science fair project idea teaches to understand and explore the concepts of crystal formation and dissolving substances.

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

This science fair project idea researches the effects of acid rain on plant growth.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

This project determines what category of person is most likely to be ticklish.

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

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

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.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

This science fair project idea identifies clouds as a means of predicting the weather.

The project determines which laundry detergent is best for cleaning clothes.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

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.