Plate Tectonics

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Across
  1. 2. cause tectonic plates to drift
  2. 4. valley that forms at a divergent boundary
  3. 7. 2 tectonic plates sliding past each other
  4. 9. 2 tectonic plates spreading apart
  5. 10. what earth looked like 200 million years ago
Down
  1. 1. __zone where one plate dunks under the other
  2. 3. long, narrow dip on the seafloor from subduction
  3. 5. Earth's outermost layer, broken into pieces
  4. 6. 2 tectonic plates pushing together
  5. 8. molten rock; located in the mantle