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6 Cards in this Set
- Front
- Back
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cntinental drift
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Wegener's hypothesis about how the continents moved
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Pangaea
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what wegener named the continents once formed part of a single landmass. It means all lands
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Panthalassa
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surrounding pangeage was a hugr ocean. It means all seas
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MId-Altantic Ridge
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an undersea mountian range with a steep, narrow valley running down its center
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mid-ocean ridges
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it is entire system. mid-altantic ridge is part of.
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seafloor spreading
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if the ocean floor was moving away fomr both sides of the ridge. As the ocean floor moved away form the ridge, it was replaced by rising magma tha cooled and solidified into new rock.Robert Dietz named this moverment seafloor speading
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