This science fair project idea teaches about the size of two different systems: the solar system and an atomic system.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Explore the belief in astrology as a predictive system.

Research different measurement systems, design your own new or improved system that can measure something difficult to measure with traditional systems.

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

This project examines which style of central-air system filter traps the most particles from the air.

Develop a new system for predicting geographic changes. Demonstrate the nature of geographic change. Make logical predictions.

This science fair project idea determines an average personâs ability to use their anaerobic power system over a period of 2 weeks.

This science fair project determines which of two chemical agents can be used to release the drug (tea) from hydrogel crystals.

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

Learn the chemistry and physics of the brain, how our nervous system work. Demonstrate that the brain is an electrical and chemical machine.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

Learn the anatomical and physiological differences between central and peripheral visual systems.

Are you able to endure long periods of exercise? Find out if snorers can exercise longer than non-snorers.

What is a barycenter? Kids learn how gravity and mass influence the orbit of binary systems like planets and moons or stars and planets in this cool experiment.

Investigate the different ways in which objects and organisms can be classified, create your own. then have volunteers classify using their own systems.

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 determines whether eating before or after exercise is more beneficial to health and performance.

Learn about emulsification and bile's roles in digestion, and investigate how the digestive enzyme lipase breaks down lipids.

Explore whether pianists have the tendency to type faster than non-pianists.

This science fair project idea determines if pancreatic lipase can break down lipids on its own or does it require the assistance of digestive bile salt.

Discover whether eating certain foods will make you smell (not only bad breath) but through skin cells.

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

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Science fair project that demonstrates the principle of conservation of mass by conducting a chemical reaction inside a sealed Ziploc bag.

This fun science fair project for 8th grade demonstrates what Kepler's 3rd law predicts about a planet's orbital period and its distance from the sun.

The objective of this science fair project is to determine the rate at which participants can respond to different patterns.

Design a hearing protection device to protect their ears from loud noises. Examine the properties of current protective hearing devices, materials.