plate tectonics

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Across
  1. 2. 2 plates move away from each other
  2. 4. the elevation decreases,a hole
  3. 6. 2 plates collide one moves under another
  4. 9. the lines indicating the elevation
  5. 10. the change in elevation between lines
  6. 12. what used to be a supercontinent
  7. 14. a very vertical slope
  8. 15. theory of earth structures movement
Down
  1. 1. lines indicating the elevation increase or decrease
  2. 3. slope at normal sea level
  3. 5. level past or under sea level
  4. 7. past life
  5. 8. a map showing the elevation of the land
  6. 11. 2 plates slide past each other
  7. 13. the top of a mountain(highest point)