Marine Oceanography Plate Tectonics

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Across
  1. 2. Also known as the asthenosphere. Flows like asphalt under heavy weight.
  2. 5. The reason the plates move.
  3. 8. Made of solid nickel and iron. Very high in temperature. Is about 800 miles thick.
  4. 9. Extremely hot and exists as both solid and liquid.
  5. 10. The thinnest layer of the earth that we live on.
Down
  1. 1. Mostly made of solid rock that floats on top of the asthenosphere.
  2. 3. The curst plus the upper mantle.
  3. 4. The largest layer of the Earth and is made up of three parts. About 1800 miles thick.
  4. 6. Liquid nickel and iron. Is about 1400 miles thick.
  5. 7. Within the middle mantle and they "flow".