University of Colorado
University of Colorado: Ph Et Interactive Simulations: Magnet and Compass
Ever wonder how a compass worked to point you to the Arctic? Explore the interactions between a compass and bar magnet, and then add the earth and find the surprising answer.
Other
University of Texas Arlington: Isostasy, Gravity, Magnetism, and Internal Heat
An in-depth look at how isostasy works and the processes taking place during glaciation and the melting of glaciers. Looks at gravity and the effects of density differences within the crust and mantle, and at Earth's magnetic field and...
CK-12 Foundation
Ck 12: Earth Science: Earth's Magnetic Field
[Free Registration/Login may be required to access all resource tools.] Examines Earth's magnetic field.
CK-12 Foundation
Ck 12: Earth Science: Earth's Magnetic Field
[Free Registration/Login may be required to access all resource tools.] Examines Earth's magnetic field.
CK-12 Foundation
Ck 12: Physical Science: Earth as a Magnet
[Free Registration/Login may be required to access all resource tools.] Explains how Earth is a magnet, its geographic and magnetic poles, and its magnetic field.
CK-12 Foundation
Ck 12: Fifth Grade Science: Physical Science: Earth as a Magnet
[Free Registration/Login may be required to access all resource tools.] Looks at the Earth as a magnet and how Earth's magnetism benefits living things.
Georgia State University
Georgia State University: Hyper Physics: Magnetic Field of the Earth
This site is a description of the earth's magnetic field, including a section on the "Dynamo effect," a proposed explanation for the origin of the earth's magnetic field.
Other
Phy6: La Tierra, El Gran Iman
This site is a general overview of space research on the environment of the Earth in space.