Tsunami

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Across
  1. 3. in the way of another thing
  2. 5. death
  3. 10. to use a lot of strength to move sth
  4. 12. huge piece of land under the sea falling away from another piece
  5. 14. a small smooth stone
  6. 15. to destroy; to level
  7. 16. the rate at which sth moves
  8. 17. first
  9. 19. to come away from the coast
  10. 20. all the plants and animals that live in an area and their relationship to each other in the food chain
Down
  1. 1. the place where two tectonic plates meet
  2. 2. to move gently in small waves (of water)
  3. 4. a large amount of destruction
  4. 6. the place where the sea meets the land
  5. 7. activity during which a volcano explodes
  6. 8. away from the place sth started
  7. 9. over a wide area or involving lots of people/things
  8. 11. pieces of the Earth’s crust
  9. 13. to move smoothly over sth
  10. 15. a natural movement of sea water but at great speed
  11. 18. the force of one thing hitting another