This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

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

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This science project teaches students to classify different shapes of leaves.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

This science project allows students to study the psychology of happiness.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Find out which type of sponge holds the most water.

This science experiment tests if dog saliva can really help heal wounds.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

Explore if planting seeds in a certain direction will affect how fast it germinates.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Find out whether matte or shiny nail polish lasts longer.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

This science fair project examines how seeds hitchhike on animals and clothing.

This science fair project idea determines if the color of light affects the growth of plants.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.