Plate Techtonics Challenge

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Across
  1. 3. a section of the lithosphere that slowly moves over the asthenosphere, carrying pieces of continental and oceanic crust
  2. 4. the name of the single landmass that broke apart 200 million years a ago and gave rise to today’s continents
  3. 7. the hypothesis that the continents slowly move across earth’s surface
  4. 8. a plate boundary where two plates move past each other
Down
  1. 1. a plate boundary where two plates move away from each other
  2. 2. a plate boundary where two plates move toward each other
  3. 5. the amount of mass in a given space mass per unit volume
  4. 6. a break in earth’s crust where massages of rock slip past each other
  5. 9. deep valley that from where two plates move apart