Plate tectonics

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Across
  1. 5. HottestLayer
  2. 6. MovesTowardEachother
  3. 7. HotRock
Down
  1. 1. LaysOnLand
  2. 2. LaysOnWater
  3. 3. MovesAwayFromEachother
  4. 4. RubsSideToSide