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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.

Learn how to convert gravitational potential energy into mechanical energy in this fun science fair project idea.

By dropping a magnet through a copper tube, kids observe the cool (and bizarre) braking effect produced by the eddy currents predicted by Lenz's law.

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

This fun science fair project idea helps students learn how acid rains are formed and explore how acid rain damages the environment.

This science project is to discover which Black Walnut tree tissue contains the most concentrated amount of Juglone, a substance that works like an herbicide.

Create a double-slit interference out of cardboard. Produce an interference pattern that demonstrates the wave and particle characteristics of light.

The objective of this science fair project is to assess the benefits of the game system for improving player performance following use.

Will people still feel hungry once they eliminate grains from their meal? Find out in this science fair project idea!

Make a backbone model to explore human anatomy and life science.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

How do search engines work? What makes various search engines different? This project delves into the world of web crawlers, caching, indexing and algorithms.

The projects describes the correlation between Gravel Run and Centreville Landing in terms of pH, dissolved oxygen, turbidity, and temperature.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

This experiment explores how listening in to a one-sided conversation affects concentration.

Determine if each hemisphere specializes in dealing with specific functions. Include illustrations of the brain, it hemispheres.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Learn about the anatomy of the autonomic nervous system and its relationship to the rest of the body.

Science fair project idea that compares number and relative sizes of leaf stomata. Collect leaves of plant species, identify, observe stomata with microscope.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

This science fair project idea creates an underwater habitat and explores the basic needs of living things under water.

Test ability to distinguish between natural and artificial aromatherapy oils. Select fragrance, natural and synthetic sample. Volunteers state preference.

This experiment observes inattentional blindness and investigates whether certain age groups or genders are more likely to demonstrate this phenomenon.

Create a colorful, informative display that illustrates the properties of blood cells. Prepare slides using samples of fresh raw beef or chicken bone marrow.

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

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.