Plants need water to grow. In this project we learn how plants transport water from their roots to their leaves

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

The objective of this science fair project is to investigate salt water density.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

This science fair project idea explores how length affects the weight a bridge can hold.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

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.

Get a better understanding of water content by dehydrating carrots.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

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.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

This science fair project idea investigates how the shape of an object affects drag.

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

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

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 idea determines which method of hand cleansing is the most effective.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

This science fair project idea investigates if webbed feet help a duck (and others) swim.