Earth

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Across
  1. 2. it's hot, dense and it's the centre
  2. 5. it measures quakes
  3. 7. the path of earth
  4. 9. Helps lava escape
  5. 10. crust elevated above surroundings
Down
  1. 1. It is the outermost out of the three layers
  2. 3. large, flat but high land
  3. 4. o3
  4. 6. he studies the earth
  5. 8. everything would float, but for this