Chapter 5 - Plate Tectonics

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Across
  1. 1. process where earth's crust goes into the mantle
  2. 5. the borders of the plates are called ______
  3. 6. plate boundary that moves apart
  4. 8. the bottom of the sea
Down
  1. 2. a long narrow ditch on the seafloor
  2. 3. plate boundary that moves away
  3. 4. plate boundary that grinds past each other.
  4. 7. the process where earth's surface changes