Gracie3

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Across
  1. 4. sideways and downwards movement
  2. 6. boundary plates spread
  3. 7. original supercontinent
  4. 8. liquid and solid center
  5. 10. breaks in the crust where earthquakes occur
  6. 11. soft layer below lithosphere
  7. 13. crust and upper mantle
  8. 15. solid outer
  9. 17. long deep depression in ocean floor
Down
  1. 1. movement of heat in liquid and gasses warm rises cool sinks
  2. 2. movement of heat energy through space
  3. 3. boundary plates slide past each other
  4. 5. boundary plates move together
  5. 9. hot solid rock below crust
  6. 12. movement of heat from one solid object to another
  7. 14. underwater mountain
  8. 16. divergent boundary on land