TECTONIC FORCES

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Across
  1. 2. Atlantic island which is cut in half by two plates
  2. 4. Instrument that measures earthquakes
  3. 7. Caused when two plates rub together
  4. 9. Thin layer of the earth's surface
  5. 10. Edge of the huge slabs of rock on the earth's surface
  6. 12. Molten rock beneath the earth's surface
  7. 13. When molten rock spews from the earth's surface
  8. 15. Molten rock above the earth's surface
Down
  1. 1. Mountain formed by molten rock that erupts
  2. 3. When the earth shakes
  3. 5. Plate on which the British Isles is located
  4. 6. Number of plates on which Japan is located
  5. 8. Giant waves caused by vibrations under the sea
  6. 9. Extremely hot centre of the earth
  7. 11. Plate on the west coast of South America
  8. 14. Large pieces of rock that move on the earth's surface