The Earth

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Across
  1. 2. caused by the very hot material at the deepest part of the mantel rising and then cooling and sinking again over and over again
  2. 4. he is known for his theory of continental drift
  3. 6. solid ball of metal made of solid nickel and iron
  4. 8. hot molten or semifluid rock erupted from a volcano
  5. 11. extremely hot liquid and simi-liquid rock located under the earth
  6. 13. formed when two tectonic plates meet under the ocean
  7. 14. it is the reason the crustal plates move
  8. 15. made up of the crust and upper mantle, brittle rock
Down
  1. 1. layer of molten liquid core
  2. 3. plates moving across the earth's surface for hundreds of millions of years
  3. 5. a landform where molten rocks erupt through the surface of the planet
  4. 7. shaking, rolling or sudden shocks of the earth's surface
  5. 9. a theory explaining the structure of the earth's crust
  6. 10. he was a professor of geology
  7. 12. the layer that you live on and most widely studied