This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Salmonella and E.coli are common food contaminates. This experiment measures the time it takes for E.coli and Salmonella to reach hazardous levels in fish.

This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

Explore the best way to store popcorn kernels. It examines the impact of moisture and temperature on unpopped kernels.

The thermometer outside is dip, dip, dipping! What kind of clothes will keep you warmest this winter? This project determines which materials insulate best.

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

Check out this fun science fair project idea to determine if the size of a particle affect the rate or speed of a chemical reaction.

This project explores what happens to a rubber band when it is heated and cooled.

This experiment investigates if stress alters body temperature.

This science fair project idea identifies clouds as a means of predicting the weather.

Determine which seeds are most likely to survive harsh winter conditions (low temperatures).

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

Check out this fun science project idea to explore different types of starches and learn how removing starch affects the quality and taste of food.

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

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

This experiment investigates if small changes in your diet can alter your basal body temperature.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

Check out this fun science fair project idea to learn how alkaline batteries convert chemical energy to electrical energy?

If you're looking for a fun way to have your child gain practice pattern-making while working out fine motor skills, making Washi eggs is the perfect activity.

This experiment evaluates if the temperature of the environment that you work in affects your ability to perform mental tasks.

Work on measurement by sliding cards along a table with your second grader in this fun game. Use centimeters or inches, add up your totals, and see who's won!

This project examines the concentration of dissolved oxygen in water, with and without oil.

This hands-on activity gives your child an opportunity to apply various strategies to solve a problem and to check if his answer makes sense.

This science fair project idea deals with the qualities of shade on a sunny day.

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