Tectonic crossword

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Across
  1. 2. idea intended to explain something
  2. 6. crash with violent impact
  3. 9. the scientist who made the theory of continental drift
  4. 10. the outermost layer of earth
  5. 12. layer of rock between earths crust and outer core
  6. 14. the supercontinent made 225 million years ago
  7. 15. crake in earths crust where two plates meet
  8. 16. lower layer of crust
  9. 18. A big chunk of earths crust
  10. 20. action of splitting apart two plates
Down
  1. 1. border of a tectonic plate
  2. 3. science of earth’s structure
  3. 4. the moving of on plate under another
  4. 5. molten rocks under the crust if earth
  5. 7. vibration underground along a fault
  6. 8. branch of geology studying earths the crust
  7. 11. drift the movement of continents
  8. 13. outer part of earth’s layers including the crust and mantle
  9. 17. An Area where magma rises into earths crust
  10. 19. a long ditch cut into the earth