Layers of the Earth

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Across
  1. 2. spins faster than earth
  2. 3. second wave of a quake
  3. 6. size of inner core
  4. 9. amount of pressure in core
  5. 11. deepest humans have dug
  6. 12. made of iron , magnesium , and silicon
  7. 13. one of two parts of the radiation belt
  8. 17. the other part of the radiation belt
  9. 19. thickness of outer core
  10. 20. layer of mantle that melts rock
Down
  1. 1. diameter of the inner core
  2. 4. made of silicon, aluminum , oxygen and brittle
  3. 5. reverses about every 200,000 years
  4. 7. the first earthquake wave
  5. 8. number of faces on a 1/2 karat diamond
  6. 10. made of liquid nickel and iron
  7. 14. made of solid nickel and iron
  8. 15. another name for crust
  9. 16. volcanic rock that carries diamonds
  10. 18. part liquid and part solid