continental drift theory vocab

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Across
  1. 3. when plates move ward each other and collide
  2. 8. spreading new oceanic crust is formed through volcanic activity and gradually moves away from the ridge
  3. 11. molten rock that is under ground
  4. 12. two tectonic plates move away from each other
Down
  1. 1. molten rock that breaks through the earth's surface
  2. 2. an opening in the earth's crust through which lava,and gases escape
  3. 4. the point inside earth' crust where an earthquake originates
  4. 5. super continent that incorporated almost all the landmasses on earth
  5. 6. a fault along a plate boundary where the motion is predominantly horizontal
  6. 7. the point on the earth's surface vertically above the focus of an earthquake
  7. 9. push gravitational sliding or sliding plate force
  8. 10. spot large plume of hot mantle materials rising from deep within the earth