THE EARTH

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Across
  1. 1. earths outer skin of rock
  2. 4. the first layer of the atmosphere
  3. 7. the third layer of the atmosphere
  4. 13. in the mesosphere you can find this being burned up
  5. 17. in the thermosphere you can find this floating around
  6. 18. a dense ball of solid iron and nickel
  7. 19. in the troposphere all the earths what occurs here
  8. 20. in the stratosphere you can find this flying
Down
  1. 2. the last layer of the atmosphere
  2. 3. a rock with light color and coarse grains
  3. 5. the lower part of the mantle
  4. 6. a dark rock with fine grains
  5. 8. the highest part of the atmosphere in the thermosphere
  6. 9. a layer of hot, solid rock below the crust
  7. 10. a layer made up of molten iron and nickel
  8. 11. the uppermost part of the mantle
  9. 12. a wave produced by a earthquake
  10. 14. the second layer of the atmosphere
  11. 15. how we measure the climate
  12. 16. the bottom part of the thermosphere
  13. 21. as we go down into the earth what increases