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Plate Tectonics (Continental Drift (sea floor (middle is young, outside is…
Plate Tectonics
Continental Drift
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sea floor
middle is young, outside is old
middle segment is thin, outside is thick
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middle of the ocean floor is young rock, and the edges are old rock
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Hot Spots
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the continents move, not the hot spot
over time, island chains are formed
the chains become worn, and move with the plates
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