Layers of the earth

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Across
  1. 3. the outer most layer
  2. 6. why layers of the earth exist
  3. 7. Solid and made of iron and nickel
  4. 8. Hot rise cold fall
  5. 10. makes up the continental plates
  6. 11. made of basalt
  7. 13. the thickest layer
  8. 14. lava in earth
  9. 15. made the continents
Down
  1. 1. shields the earth from solar stuff
  2. 2. Only liquid layer
  3. 4. in between the uppermost layer and thickest
  4. 5. the upper most layer and upper part of the thickest
  5. 9. makes up the oceanic plates
  6. 12. made mainly of granite