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.

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!

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

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

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?

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.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Science fair project that examines condensation and the conditions needed in order for dew to form.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

How powerful is the reaction between baking soda and vinegar? Find out here!

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.