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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!

This science fair project idea focuses on saturated and unsaturated lipids (fats and oils).

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.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

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

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

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

This experiment examines whether storing your orange juice at different temperatures affects its acidity.

Give your second grader a chance to get his feet wet with measurement before he moves onto the more complicated stuff by trying this activity with him at home.

Invite your kindergartener to explore the bright new world of measurement by starting out with nonstandard (and tasty!) units, such as gummy bears or worms.

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.

This science fair project idea determines which flower lasts the longest.

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

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

Find out whether cast iron or regular teflon pans heat up faster and also retain their heat longer.

This do-it-anywhere guessing game helps reinforce number concepts. And it's a blast to play.

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

Do your laundry and your science project simultaneously! This science fair project investigates whether the color of a garment affects the time needed to dry.

Explore properties of liquids and how temperature and salinity effect surface tension of liquids in this fun- filled science fair project idea.

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.

Find out whether freezing or refrigerating destroys more bacteria. This is essential to consuming safe and germ-free food.

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

This project examines how temperature affects the volume of gas in balloons.

This science fair project idea determines whether land or water warms more quickly and investigates how solar radiation increases the temperature of surfaces.

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

What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.