How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Use dirt and different colors of craft sand to make unique layers in a clear plastic cup to represent the layers of the Earth.

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

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

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

The project determines which type of birds prefer which type of birdseed.

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

Test your friends to find out if you can replicate the placebo effect's incredible results.

The project is to investigate yeast fermentation and its results on hand of latex balloons.

This science fair project idea studies which brand of wintergreen candy produces the most sparks in the dark.

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

This science fair project idea discovers which parts of the body are more sensitive to touch than other parts of the body.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

This science fair project idea identifies clouds as a means of predicting the weather.

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

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

This project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.

This science fair project idea deals with the qualities of shade on a sunny day.

This science fair project investigates why the number of visible stars changes from place to place.

In this science project, baking powder and vinegar are used to simulate the action of a fire extinguisher.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!