NASA
Nasa: Magnetic Reversals and Moving Continents
This site gives a good overview of magnetic reversals. Discusses continental drift, ocean floor magnetism, and sea-floor spreading.
Wikimedia
Wikipedia: Continental Drift
A brief Wikipedia encyclopedia article on continental drift. It tells what continental drift is, what causes it, and gives examples of evidence that continental drift has occurred.
Georgia Department of Education
Ga Virtual Learning: Plate Tectonics
In this interactive tutorial you will learn about the theory of continental drift and why it was ultimately rejected. Then learn about the theory of plate tectonics and the evidence to support it. Lastly discover the types of boundaries...
CK-12 Foundation
Ck 12: Earth Science: Magnetic Evidence for Seafloor Spreading
How magnetic reversals on the seafloor provide evidence for seafloor spreading. [Free Registration/Login may be required to access all resource tools.]
CK-12 Foundation
Ck 12: Earth Science: Magnetic Evidence for Seafloor Spreading
[Free Registration/Login may be required to access all resource tools.] How magnetic reversals on the seafloor provide evidence for seafloor spreading.
Other
This Old Earth: Geology Online: Paleomagnetism and Continental Drift
Discusses discoveries that laid the foundation for scientists' understanding of paleomagnetism, continental drift, and magnetic reversals.
CK-12 Foundation
Ck 12: Earth Science: Seafloor Spreading Hypothesis
[Free Registration/Login may be required to access all resource tools.] Covers seafloor spreading and the mechanism for continental drift.
Other
University of Delaware: Plate Tectonics
This site is a very simple overview of plate tectonics. It includes a map of all the major plates and a diagram of the layers of the earth.