chapter 7 voceb.

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Across
  1. 3. was once a super continent
  2. 5. floor spreading new crust forms along the mid ocean
  3. 6. polarity compass needles to point north
  4. 9. poler when objects point south
  5. 11. drift constant motion on the surface of
Down
  1. 1. tectonice rigid slabs of rock that move with respect to each other
  2. 2. reversal when magnetic field reverses direction
  3. 4. part of the seafloor
  4. 7. ridges mountain ranges in the middle of the ocean
  5. 8. older crust moves away
  6. 10. cold and rigid outmost rock layer divergent