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Plate Tectonic Theory [Pdf]
Check out this slideshow on Plate Tectonics-The unifying theory for all other theories in the Earth sciences-Has resulted in a more detailed understanding of Earth history-Has enabled geologists to more precisely(and cheaply) discover...
PBS
Wnet: Thirteen: Savage Earth: Waves of Destruction, a Tsunami Animation
View a brief animation that explains the science behind a tsunami.