Earth's system's crossword puzzle

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Across
  1. 5. intermost layer
  2. 7. hawaiian
  3. 10. uper mantle
  4. 11. tectonic plates divide
  5. 12. drives plate tectonics
  6. 13. sinks
  7. 15. divergent plates separate
Down
  1. 1. boundary
  2. 2. weathering
  3. 3. faster than s waves
  4. 4. plates large peices of lithosphere
  5. 6. magnetic field
  6. 8. crystallizes
  7. 9. phenomena
  8. 14. pre existing fossils