Plate movements - GEOGRAPHY OCR B

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  • Plate movements
    • Constructive
      • Two plates moving TOWARDS each other. When an oceanic plate meets a continental plate, the denser oceanic plate is forced down into the mantle and destoryed.
    • Destructive
      • Two plates moving AWAY from each other. Magma rises from the mantle to fill the gap and cools, creating new crust.
    • Consertative
      • Plates move in similar direction but DIFFERENT SPEEDS. Tension builds up between the plates the released in earthquake seismic waves
    • Collision
      • When two continental plates of the same destiny move toward each other neither will sink. So, they squeeze upward, creating mountain ranges.
  • Volcano- only destructive and constructive
  • Earthquake- all three plate movements


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