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Photosynthesis Directory
This site explains how plants use photosynthesis to store energy from the sun. Visit this site and explain how you end up using the energy from the sun that the plants store with photosynthesis.

Perpetual Motion Machines
This private home page details how the second law of thermodynamics prohibits perpetual motion machines. Visit this site and explain why perpetual motion machines are impossible to build.

Your Digestive System and How it Works
Visit this site to learn how our bodies use food. Which type of food is a source of high energy? Choose three different foods you have eaten in the past week and determine what you got from them, whether it be nutrients or energy.

Air Pollution: Halogens and Ozone Depletion
Chemistry Visualized offers several videos and pictures demonstrating the theory of ozone depletion. Visit this site and explain why ozone depletion, if true, is a concern.

Catalytic Converters
Here you can find some detailed videos and images that describe how catalytic converters work. Visit this site and discover how these devices make our air cleaner.

Electrical Safety Web
Visit this site provided by the National Electrical Safety Foundation. Take the safety quiz and learn more about how to make your home safe from electrical hazards.

Electricity: A Convenient form of Energy
Follow the link to this site for more information about electricity. In your Science Journal, list the characteristics of electricity that make it a useful form of energy.

Earth & Sky Program List for 1998
At this site you can listen to a radio show about magnetism. Click on the link for Sunday, November 15, 1998 to find the program.

What is a Magnet?
Access this site for more information about magnets and how they are used. What is the difference between a permanent and a temporary magnet? How is an electromagnet created?