plate tectonics and earth's layers vocab words

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Across
  1. 2. plates
  2. 3. zone
  3. 5. boundary where volcanos form
  4. 9. the large pieces of land
  5. 10. boundary when two plates move away
Down
  1. 1. of the earth
  2. 4. what makes earthquakes happen
  3. 6. boundary
  4. 7. our planet
  5. 8. how close atoms are packed together