tectonic plates

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Across
  1. 2. the hottest part of earth
  2. 6. what shots out of volcanos
  3. 8. when plates move upwards with eachother
  4. 9. when the seafloor spreads
  5. 12. hardened lava
  6. 14. the theory of plate tectonics developed in the 1960
  7. 16. an air vent to earths core
  8. 18. vent at the bottom of the ocean
  9. 20. a long narrow ditch
Down
  1. 1. where plates meet
  2. 3. a series of shaking in the earth
  3. 4. the deepest part in the marianis trech
  4. 5. the large amount of land that moves the earth
  5. 7. the first name for the land
  6. 8. the deepest trench in the world
  7. 10. the top of the oceans water
  8. 11. outside of the core
  9. 13. when plates move and the grounderneath doesn't
  10. 15. just underneath earths crust
  11. 17. the outer most layer of the earth
  12. 19. scale the instrument to measure earthquakes