CK-12 Foundation
Ck 12: Earth Science: Wegener and the Continental Drift Hypothesis
[Free Registration/Login may be required to access all resource tools.] How Wegener's hypothesis of continental drift was refined.
CK-12 Foundation
Ck 12: Earth Science: Continental Drift
[Free Registration/Login may be required to access all resource tools.] Describes Wegener's continental drift hypothesis and his evidence for it.
McGraw Hill
Glencoe Online: Plate Tectonics Quiz
Take this 20 multiple choice question quiz on plate tectonics.
Soft Schools
Soft Schools: Plate Tectonics Quiz
The internal and external processes of Earth are related through the movement of Earth's plates, called Plate Tectonics. Find out how much you know about Plate Tectonics by taking this quiz.