In this earth science lesson, students study a satellite image of hurricane Isabel and write answers to 5 questions that follow. They match predictions to the map locations.

Students use satellite data to explore sea surface temperature. They explore the relationship between the rotation of the Earth, the path of ocean current and air pressure centers. After studying maps of sea surface temperature and ocean...

A great overview of the Cardiovascular System, its structure and functions. See diagrams of the heart, and learn how the blood flows through the heart.

The circulatory system and how it functions are explained. An interactive diagram shows how blood flows through the heart. Disorders of the heart and the circulatory system are also described.

Background information review of key concepts about the circulatory system, including the heart and pulse. Tis site provides diagrams, activities, and quiz questions.

A labeled diagram of the major veins and arteries in the human body.

"Global Circulations explain how air and storm systems travel over the Earth's surface. The global circulation would be simple (and the weather boring) if the Earth did not rotate, the rotation was not tilted relative to the sun, and had...

A digital diagram from Digital Frog of the circulatory system of a frog. Very nice, and very fake since it is not a real frog.

A very good site about the circulatory system of a bird. It is reader friendly, and includes a fair amount of information. Good diagram of the circulatory system.

This PBS site has a concise explanation of how the heart works. There is also a moving diagram of a working heart.

This site features a detailed index of photographs for cardiovascular pathology. You can see what a normal human heart looks like and what a sick one looks like too. Come and check it out.