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