tectonic plates

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Across
  1. 3. Crack in the earths surface where earthquakes usually happen
  2. 4. The mesosphere is one of the -------- of earth
  3. 5. This is formed when two tectonic plates are converging and they make this zone..
  4. 7. Makes 1% of the earth
  5. 8. The inner part of the earth.
  6. 9. Theory proposed by Alfred Wegner
  7. 11. This is under the asthenosphere
  8. 15. crust becomes shorter and bigger while the tectonic plates squashed.
  9. 16. This was thought of by alfred wegner hence continental drift.
  10. 18. This is made out of the crust and the upper mantle
  11. 20. The outer part of the core
Down
  1. 1. Where faults usually occur
  2. 2. The inner part of the core
  3. 6. Two plates crash into each other to make this boundary
  4. 10. Theory proposed by Harry Hess
  5. 12. The layer which is between the crust and the core
  6. 13. The tectonic plates move away from each other.
  7. 14. This is below the lithosphere
  8. 17. The earth has a ----- of iron and nickel
  9. 19. There are seven major plates of these in the earth