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

This science fair project idea investigates how color affects temperature.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

Do you think heat can affect a plant's growth rate?

This science fair project idea examines which type of insulation holds in the most heat.

Discover whether a metal will expand under hot water.

This project investigates the affect of storage temperature on microwave popcorn.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

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.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

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.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

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

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

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

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