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Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

In this science fair experiment about recycling, demonstrate how the wax from a candle can be reused to make another candle.

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

Explore how you can achieve magnetic levitation with the Meissner Effect! This cool science project explains formation and applications of a superconductor.

This science fair project researches the most effective method to cut an onion and stay tear-free.

This experiment will explore if magnetism has any effect on the regeneration abilities of flatworms.

Test for a correlation between perceived color and heart rate. Using a stethoscope and stop watch, measure the heart rate (beats per minute) of volunteers.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

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

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

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

Find out which part of a flame burns wood the fastest and also if this is true for all types of flames such as candle-flame, burners, and lighters.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

In this activity, you child will learn about how heat changes food. On the next sunny day, head outdoors to make a treat in an outside oven! Here's how:

Get a cool science fair project idea for middle schoolers on the effect of adding sugar to the growth of green plants.

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

Demonstrate the principle of jet propulsion in this science fair project by building a rocket from household materials.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

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

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

Research optical illusions and human auras. Understand why the probable cause of perception is mach bands.

This project examines the vulnerability of fruit flies, Drosophila melanigaster, to irradiation. Will exposure result in mutations?

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Science fair project which examines the chemical reaction of a candle flame with various gases in order to determine the identity of the gas.