Plate Tectonics

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Across
  1. 2. When two plates overlap
  2. 5. two plates moving the opposite direction
  3. 6. two plates grinding past each other
Down
  1. 1. _______ from mantle causes plates to drift
  2. 3. less dense plate goes underneath more dense plate
  3. 4. a crack, break, or gap
  4. 7. Molten rock