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Get a cool science project idea on a photovoltaic cell and explore the various factors that affect the energy output of the photovoltaic cell.

The objective of this science project is to investigate why NASA has been using aerogel for the Stardust Project for collecting gas and dust from comets.

This science fair project idea explores whether talking to a plant will help it grow.

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

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

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

This science fair project idea quantifies the effect of weather- in this case temperature and humidity- on musical instruments.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

The objective of this experiment is to evaluate whether funny advertisements are more or less effective than serious advertisements.

Describe the lives of commercially raised chickens. Contact local chicken farmers for information and advice. Write a detailed report about farming techniques.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

This science fair project idea determines whether volunteers remember more information presented orally or visually or kinesthetically.

Do dogs understand English? Kids will find out with one of our favorite dog science fair projects that tests how dogs process human language and other cues.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Evaluate whether people can raise the temperature of their finger using the power of their thoughts.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

This science experiment explores why leaves change color in the fall and the role of photosynthesis in leaf coloration.

Start your toy engines -- this is going to be a fast and friction-filled race!

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

The Galileo inclined plane physics experiment was one of the first ways scientists calculated acceleration due to gravity. Do it yourself in this project!

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

Find out whether matte or shiny nail polish lasts longer.

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