Tectonic Plates crossword

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Across
  1. 2. the northern part when the continents started to separate
  2. 4. sits between earth's core and its thin outer layer
  3. 6. this is created when two plates collide into each other that have simular thickness and weight
  4. 7. the process that causes the asthenosphere and the lithosphere to move
  5. 11. term used to describe the movement of continents
  6. 13. when plates move away from each other they pull apart the earths crust to make this
  7. 14. earth’s furthest layer
  8. 19. tectonic plates lie on top of a molten layer of rock called this
  9. 20. something widely believed but not a fact
Down
  1. 1. along with granite something the tectonic plates are made of
  2. 3. where the most earthquakes happen along the rim of this ocean
  3. 5. a term used to describe the fitting of continents
  4. 8. plate tectonics show how this is made
  5. 9. when two plates collide together with one going under the other
  6. 10. the southern part when the continents started to separate
  7. 12. structure of the earth's crust
  8. 15. when the continents were all together
  9. 16. when tectonic plates rub against each other this happens
  10. 17. scientist who came up with the theory of continental drift
  11. 18. how many major tectonic plates are there?