plate boundries-Mason

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Across
  1. 4. A deep depression in the ocean floor created by a subduction zone.
  2. 7. Boundary where two tectonic plates move away from each other.
  3. 9. An underwater mountain range created by seafloor spreading.
  4. 10. Boundary where two plates slide past each other horizontally.
  5. 11. The process of one plate sinking beneath another into the mantle.
  6. 12. The ancient supercontinent that began to break apart millions of years ago.
Down
  1. 1. A fracture or zone of fractures between two blocks of rock.
  2. 2. Boundary where two tectonic plates collide or move toward each other.
  3. 3. A vent in the Earth's crust through which lava, steam, and ashes are expelled.
  4. 5. A deep valley that forms where plates slide apart on land.
  5. 6. The rigid outer layer of the Earth, consisting of the crust and upper mantle.
  6. 8. Sudden shaking of the ground caused by tectonic plate movement.