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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.

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

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

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

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 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 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 investigates why the number of visible stars changes from place to place.

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.

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.

Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.

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!

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

This science fair project idea explores which fruit molds the fastest.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Discover which fabrics shrink the most in the wash and why.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

In celebration of Earth Day, help your fifth grader write a poem from the Earth to its inhabitants.

Examine the effect of pressure on carbonation in soda.