• Alfred Wegener, who died on the Greenland ice sheet at the age of 50, didn't live to see his work develop into plate tectonic theory.
  • Each plate is named for the continent or ocean basin it contains.
  • There are a dozen major plates and several minor plates.
  • A plate can carry continental crust, oceanic crust, or some of each.
  • If a weight is added to a plate, like a glacier, the plate will sink into the mantle.
  • If the weight is taken away, like when the glacier melts, the Plate will rise.
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