science chapter 3

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Across
  1. 4. the supercontinent that existed over 300 million years ago
  2. 6. Earth's plates are in slow, constant motion, driven by convection currents in the mantle
  3. 8. where pieces of Earth's crust diverge on land form a deep valley
  4. 9. the process by which the ocean floor sinks beneath a deep ocean trench and back into the mantle
  5. 10. where plates come together or converge
  6. 11. the process of new material being add to the sea floor, pushing the old rock out
  7. 14. where rocks slip/slide past each other
Down
  1. 1. where molten material from earth's mantle pushes through the ocean floor
  2. 2. where old rock on the ocean floor sinks back into the mantle
  3. 3. breaks in earth's crust where rocks have slipped past each other form these boundaries
  4. 5. the idea that the continents slowly moved over earth's surface
  5. 7. where plates move apart or diverge
  6. 12. the huge pieces of rock that make up earth's surface
  7. 13. any trace of an ancient organism that has been preserved in rock