earth

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Across
  1. 3. how much it weighs.
  2. 4. the thickest layer of the planet.
  3. 6. how much matter is in a certain space.
  4. 10. how big it is.
  5. 11. heat moving to something it is touching.
  6. 12. the thinnest layer of the earth.
  7. 14. the center of the earth.
  8. 16. what the continents are.
  9. 17. heat moving through a conduit.
  10. 18. the circulation of heat through a conduit.
Down
  1. 1. crust under the continents.
  2. 2. the rock beneath the ocean.
  3. 5. what the lithosphere lays on.
  4. 7. the rock beneath the continents.
  5. 8. crust under the ocean.
  6. 9. the only liquid layer of the earth.
  7. 13. the effect of an earthquake.
  8. 15. heat moving through a vacuum.