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

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 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.

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 evaluates if the temperature of the environment that you work in affects your ability to perform mental tasks.

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!

How do cold packs work? Explore endothermic reactions by comparing the temperature change that results from various chemicals added to water to find out!

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

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.

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

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

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

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:

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.

Plants help keep a house cool! This article includes step-by-step instructions for completing this fun and interesting science experiment.

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

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

Try this fun garden graphing project with your kindergartener this summer to give him a leg up in math and science while spending some valuable time outdoors!

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

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

This simple experiment serves as an introduction to the greenhouse effect.

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

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

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Check out this fun science fair project idea to learn how alkaline batteries convert chemical energy to electrical energy?