This project concerns activity happening millions of miles away, on the sun.

Become familiar with ratios and learn how to measure the diameter of the Sun and the Moon in this fun science fair project idea.

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.

Science fair project that determines how UV radiation emitted by the sun varies depending on the time of day, using a handheld UV detector

This experiment works due to a simple principle: plants need light. Build a shoebox maze and watch the plant work though the obstacle course, searching for sun.

Combine fun sensory play with early number awareness in a squishy sun catcher project. It's a fun way for your kid to learn about numbers.

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.

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

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

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

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

Introduce your child to science with something they see everyday--their shadow!

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

In this activity, you child will learn about how heat changes food. On the next sunny day, head outdoors to make a treat in an outside oven! Here's how:

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

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

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

This activity turns your kid into the family weatherman. Plus, it teaches him to collect data and begin to understand graphing.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

How many steps long is the hallway? Kids put their graph-making skills to work as they make a step map of their own house.

Science fair project that measure winds speed, temperature, and time of day in order to determine the origins of the wind.

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

Encourage your kindergartener to investigate and chronicle the weather she observes during the coldest months of the year.

Help your daughter organize all of her barrettes with this fun and colorful activity!

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.