Plate motion crossword

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Across
  1. 2. long and narrow ditch
  2. 4. mountain that sprays lava
  3. 6. fossils found in south America and africa
  4. 9. a system meant to represent something
  5. 10. steps of a whole plan
  6. 12. 7 main lands of earth
  7. 14. land separating
  8. 15. thing that happens when water or lava flows
  9. 16. how often or fast something happens
  10. 18. ____ of fire
  11. 19. _____ tectonics
Down
  1. 1. _______ridge
  2. 3. plates move together
  3. 5. outer part of something
  4. 7. where earthquakes happen most
  5. 8. water sprays out of a hole in the ground
  6. 9. soft or hard rock underneath plates
  7. 11. ground shakes
  8. 13. Plates move apart
  9. 17. _____layer