Plate Tectonics

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Across
  1. 3. occurs when denser plate is pushed under less dense plate
  2. 5. thinnest layer of Earth
  3. 7. proposed continental drift theory in 1900s
  4. 9. formed at divergent boundaries
  5. 10. theory of tectonics plate movement and shape changes
  6. 11. name of single landmass 245 million years ago
  7. 14. formed from movement and slips of boundaries
  8. 15. deepest part of Earth's layers
  9. 17. 2 plates going in different directions
  10. 18. hot fluid within or below Earth's crust
  11. 19. movement of continents across Earth's surface
  12. 21. found mostly in the core
  13. 22. formed at ocean-ocean boundaries
Down
  1. 1. 2nd layer of Earth doing down
  2. 2. consists of the crust and upper mantle
  3. 4. process where magma rises to surface and solidify
  4. 6. 2 plates moving towards each other
  5. 8. name of many volcanoes surrounding the Pacific plate
  6. 12. formed at continental-continental boundaries
  7. 13. formed at continental-ocean boundaries
  8. 16. 3rd layer of Earth doing down
  9. 20. 2 plates sliding pass each other