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Plate Tectonics

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    Plate Tectoncis
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  • In 1910 a German scientist name ________ had a theory that the continents were once together in a giant landmass.
    Alfred Wegener
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  • What did Alfred Wegener call his theory?
    Continental Drift
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  • What did Alfred Wegener think happened?
    The continents were once together and have moved apart.
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  • What did Alfred Wegener call the giant landmass?
    Pangaea
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  • What process adds new crust to the ocean floor?
    Sea floor spreading
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  • Where does sea floor spreading occur?
    Mid Ocean Ridge
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  • What is a long chain of mountains found underwater?
    Mid Ocean Ridge
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  • What is the lithosphere broken into?
    Plates
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  • Where does sea floor spreading occur?
    Mid Ocean Ridge
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  • At what type of boundary do the plates move away from each other?
    Divergent Boundary
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  • At what type of boundary do plates move towards each other?
    Convergent Boundary
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  • At what type of boundary to plates slip past each other?
    Transform Boundary
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  • Name one thing that forms at a divergent boundary.
    Mid Ocean Ridge
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  • Name one thing that forms at a convergent boundary.
    Mountain, Volcano or Deep Ocean Trench
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  • What happens at a transform boundary? (What is the disturbance called?)
    Earthquake
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