Layer's of the Earth

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Across
  1. 2. The way scientists can study the earth's layers
  2. 4. The thinnest layer of Earth
  3. 7. The process by which Earth's layers are formed
  4. 10. The only liquid layer of the earth
Down
  1. 1. The reason for the order of the layers
  2. 3. A disk that eventually forms our solar system
  3. 5. The second layer from the outer layer
  4. 6. Is made up of mostly Nickle and Iron
  5. 8. The third planet from the sun
  6. 9. The center of our solar system that formed from the middle of the solar nebula