EARTH AND SPACE

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Across
  1. 2. consolidated mixture of minerals
  2. 5. a depression in the seafloor produced by subduction process
  3. 6. any break in a rock in which no significant movement has taken place
  4. 9. the outer portion of the earth
  5. 10. The evolution of pangaea 200 million years ago.
  6. 12. the topmost, solid part of the Earth that is composed of several plates
  7. 16. _____ beds were formed from the compaction and decomposition of swamp plants that lived million years ago.
  8. 17. a break in a rock along which movement has occurred
  9. 18. He worked together with Harry Hess (Seafloor Spreading Theory)
Down
  1. 1. subdivided into two layers: the inner and the outer core.
  2. 3. Zone In the place where two oceanic plates collide or where an oceanic plate and a continental plate collide, a ___________ occurs.
  3. 4. a pulse energy that travels quickly through the Earth and through liquids.
  4. 7. the ability of solid to flow
  5. 8. a record made by a seismograph
  6. 9. _________ current makes the plates move.
  7. 11. the mantle-core boundary
  8. 13. a Greek word which means "All Earth"
  9. 14. The middle layer of the Earth. It makes most of the Earth’s volume and mass.
  10. 15. rigid sections of the lithosphere that move as a unit