Center for Educational Technologies
Exploring the Environment: Earth System Science
Explains what the four spheres of the Earth are, and the interactions between them.
Science Education Resource Center at Carleton College
Serc: Relationships Between Tree Ring Dating, Wildfires, and Floods
In this lesson students will understand the four spheres of the earth and how they relate to one another. This project uses a combination of Internet investigations and multiple field investigations to develop an understanding of the Earth.
California State University
Csu: The Sourcebook for Teaching Science: Earth Systems Interactions
Explains what the four spheres of the Earth are and describes how volcanic eruptions affect the different spheres. Also provides a list of events that are examples of interactions.
Rice University
Museums Teaching Planet Earth: What Is the Geosphere?
Describes Earth's layers, which make up the geosphere.