Plate motion crossword puzzle

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Across
  1. 3. evidence of life from the past
  2. 7. the slow pulling apart of land the is caused by plate motion
  3. 9. hot liquid rock on Earth’s surface
  4. 13. a sudden shaking of Earth's crust
  5. 15. a long deep indentation in the ocean floor formed when 2 plates move together
  6. 16. when 2 plates are moving towards each other
  7. 18. the place where 2 plates meet
  8. 19. when 2 plates are moving towards each other
  9. 20. the layer of soft solid rock underneath Earth’s surface
Down
  1. 1. A scientific instrument used to record data from earthquakes
  2. 2. one of the large sections of hard, solid rock that makes up Earths outer layer
  3. 4. when 1 plate goes underneath another plate and is destroyed in the mantle
  4. 5. the outside or top layer of something
  5. 6. the sudden pushing out of something
  6. 8. this person invented the idea of plate tectonics Alfred ____________
  7. 10. an underwater mountain chain formed at divergent plate boundaries
  8. 11. Earths outermost layer of solid rock that is underneath the soil, vegetation, and water
  9. 12. something we observe to be similar over and over again
  10. 14. how often of fast something happens
  11. 17. hot liquid rock below the surface of Earth