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.

Find out whether pacing in long-distance running actually acquires for drastic changes in finishing times versus running super-fast at the start.

This science fair project idea demonstrates the property of bouncing in a fresh new way.

This science fair project idea produces varying pitches of sound.

This research project teaches students about synesthesia, a neurological condition that causes sensory overlap.

In this project, the fingerprints of family members are compared to determine if people from the same family have similar fingerprints.

This science fair project idea teaches what wildlife rehabilitators do and about the process of wildlife rehabilitation.

This science fair project idea determines the most effective method of preserving food.

This science fair project idea investigates the difference in reaction times between boys and girls.

Research historic methods of food preservation. Analyze alternative recipes and techniques of food preservation. Document success with photographs.

Science fair project that creates fog using bottles of hot and cold water.

This science fair project idea discovers new ways to use recycled materials and encourages new architectural design ideas.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

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

Place mushroom caps on poster board, label samples. Check beneath mushroom caps for "prints" of spores. Record and interpret prints left behind.

Explore the negative and positive consequences of stereotypes.

Determine which metal has the highest rate of conductivity.

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

Science fair project which measures the amount of heat energy released by a burning candle by calculating how many calories of heat it emits.

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 examines how carnivorous plants digest insects, and whether the plant can use nitrogen in the soil to compensate for lack of insects.

This science fair project idea examines if there is a reason that musical notes are at the pitches they are.

Explore the best way to store popcorn kernels. It examines the impact of moisture and temperature on unpopped kernels.

This science fair project idea determines the properties of rainwater and examines the techniques for harvesting rainwater.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

This science fair project idea determines if family members can recognize one another using only the sense of smell.

Design and build a scale model representing living tree architecture. Then build a full-size version using one or more lives trees, and test your creation.

Study the effect of music on random rote memory. Examine the practical application of music in learning and education.

This project examines germs and their spread in households. The goal is to learn how to stop the spread of germs and other diseases.