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?

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

This science fair project idea explores whether color affects a person's emotional state.

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?

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

Demonstrate how to tell the age of an egg without having to crack it open.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

Start your toy engines -- this is going to be a fast and friction-filled race!

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

This simple project makes young children aware of their sense of smell and its capacity for providing them with information about their world.

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

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

This science fair project idea investigates whether plants can survive being frozen.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

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

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

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

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Find out which kind of bubble wrap fares best when put in impact.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

This science fair project idea experiments with spinning color wheels and optical illusions.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

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