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.

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.

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

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

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

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:

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.

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

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

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

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

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

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

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

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

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.

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.

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

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

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

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

This experiment will explore the best way to create a perfect soft-boiled egg.

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.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.