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| Theory by Alfred Wegener that a supercontinent, Pangaea(all earth) once existed. Pangaea gradually drifted about to their present positions over a course of 200 million years. |
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| One huge ocean that surrounded Pangaea. Today, all that remains of this omnipresent body of water is the Pacific Ocean. |
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| Rocks formed thousand or million of years ago contain a "record" of the direction of the magnetic poles at the time of their formation. Determine direction to the poles and latitude of their origin. Evidence that supported continental drift. |
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| Oceanic ridges located above zones of convection are upwelling the mantle. Material is moved up laterally spreading across the seafloor as the seafloor is then carried a conveyor belt fashion AWAY FROM THE RIDGE. |
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