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Determine which environment keeps an ice cube frozen for the longest duration. Inspect and record your observations when cubes melt.

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Science fair project that measure winds speed, temperature, and time of day in order to determine the origins of the wind.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.

This activity is a fun way to "go fishing" with your preschooler, while learning about the concepts of freezing and melting.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

Plants help keep a house cool! This article includes step-by-step instructions for completing this fun and interesting science experiment.

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

Explore how you can achieve magnetic levitation with the Meissner Effect! This cool science project explains formation and applications of a superconductor.

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

The objective of this science fair project idea is to find out whether refrigerating cosmetics will extend their shelf-life and longevity.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

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

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.

Investigate the advantages of the use of ceramics in engines such as the tiles used in Space Shuttle. Use iron filings and magnets.

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

This fall, bake some festive caramel apple cupcakes with your second grader and help her build her math skills while you're at it!

Use an Elihu Thomson apparatus, also known as a ring launcher, to learn about electromagnetism concepts and the properties of various metals.

The objective of this science experiment is to evaluate the affects of high and low heat capacity on a material's heat retention ability.

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

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

In this science fair experiment, high school students fit the growth pattern of bacteria to a mathematical model and predict future colony expansion.

Pumpkin carving party activities are great for a pre-Halloween party. Try pumpkin carving party activities, including jack-o'-lantern ideas and fall recipes.

The purpose of this science fair project is to investigate which food wrapping works best to keep refrigerated and non-refrigerated foods from spoiling.