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In this science fair project, students use hot and cold water to simulate what happens when a warm front meets a cold one.

This science fair project idea discovers the effect of (high) heat on animal cells.

The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.

This project examines the amount of saltwater required to affect the growth of plants and subsequent effects on growth and development.

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?

Check out this cool and free middle school science fair project idea on how to make a solar oven.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

The objective of this science project is to determine whether a sweet tooth is most likely an inherited trait or a learned behavior.

Science fair project that compares tap water and bottled water for the presence of common impurities.

Science fair project that examines oxidation, reduction and chemical indicators by testing for the presence of the iodide in salt.

Science fair project that measures the relative times it takes a plastic bag and a biodegradable plastic bag to decompose.

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

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

This science fair project idea determines the most effective method of preserving food.

The goal of this fun science experiment is to explore the limitations of sight and learn working of the human eyes.

This science fair project idea investigates if fats add to the flavor of food.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

This science fair project idea raises awareness of a real ecological issue.

The purpose of this project is to determine if there are fluctuations in the rising and the setting of the sun and the position of the earth as it rotates.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

Calculate the mass of the Earth using the sidereal and calendar period of the Moon and Newton's Law of Universal Gravitation in this physics science project!

This science fair project demonstrates the "power of conformity".

This science fair project idea examines the reason boats are shaped and engineered.

The objective of this experiment is to evaluate the effects of acid rain on plants.

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

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.

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

Find out whether a longer airplane will fly farther or a wider paper airplane.