Stop, drop, and roll - Or you'll be put in a hole

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Across
  1. 1. separating
  2. 4. hard to break
  3. 8. a long narrow ditch
  4. 10. squished
  5. 12. the innermost part of earth
  6. 13. pushed closer together
  7. 14. part of the earth's interior
Down
  1. 1. able to deform, not losing toughness
  2. 2. rigid outer part of the earth
  3. 3. ductile part of earth
  4. 5. change
  5. 6. liquid metal
  6. 7. stress
  7. 9. outer most layer of earth
  8. 11. break off, or cause to break off