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

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

A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

Science fair project that examines learn how the angle of incidence affects the efficiency of solar panels. How does a solar cell work?

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

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

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

Check out this cool and free middle school science fair project idea on how to make a solar oven.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Kids use applied math to build and test a parabolic mirror solar hot dog cooker in this cool engineering science fair project idea for middle school.

What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.

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

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!

The apparent movement of the sun has been used to keep time since the bronze age. In this science fair project, kids plot solar time against mean solar time.

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.

This science fair project idea determines whether land or water warms more quickly and investigates how solar radiation increases the temperature of surfaces.

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

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

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.

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.

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

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