Plate tectonics

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Across
  1. 5. Hot liquid
  2. 6. Opening in the crust of planets that erupt molten rock,gas, and ash
  3. 8. boundaries between two plates that are sliding past each other
  4. 11. broken pieces of earth
  5. 12. Less dense plates slide under more dense plates
  6. 13. Less dense plate slides under more dense plate
  7. 14. the sea floor spreading
  8. 15. Plates below the ocean
  9. 16. boundaries between two plates that are colliding
  10. 17. The plastic layer below the lithosphere
  11. 18. A huge wave caused by an disturbance in the ocean
Down
  1. 1. Violent shaking of the ground
  2. 2. the earths crust and upper mantle
  3. 3. The crust and part of the upper mantle
  4. 4. Plates under the continent
  5. 7. hot magma in the earth moves towards the surface, cools then sinks again
  6. 9. 2 types of plates
  7. 10. boundaries between two plates that are moving apart or rifting