Chapter 9 crossword Puzzle

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Across
  1. 2. occurs and the magnetic field reverses direction.
  2. 5. away from the ridge.
  3. 6. forms where two plates slide past eachother
  4. 9. drift suggested that continents are in constant motion on the surface of the earth
  5. 11. as a slab sinks it pulls on the rest of the plate with force
  6. 12. states that Earth's surface is made of rigid slabs of rock, or plates, that move with respect to eachother
  7. 14. the denser plate sinks below the more buoyant place in a process
  8. 15. all the continents were once part of a super-continent
Down
  1. 1. a state in which magnetized objects, such as compass needles will orient themselves to point north.
  2. 3. forms where two plates collide
  3. 4. forms where two plates separate
  4. 5. ridges the mountain ranges in the middle of the oceans
  5. 7. the cold and rigid outermost rock layer
  6. 8. the process by which new oceanic crust forms along the mid-ocean ridge and older oceanic crust
  7. 10. a state in which magnetized objects would reverse direction and orient themselves to point south
  8. 13. the circulation of material caused by differences in temperature and density.