chapter 7 vocabulary

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Across
  1. 3. a state in which magnetized objects
  2. 6. occurs and the magnetic field reverses direction.
  3. 8. forms where two plates collide
  4. 10. the denser plate sinks below the mote buoyant plate in a process.
  5. 11. as a slab sinks it pulls on the rest of the plate with a force.
  6. 13. A state in which magnetized objects would reverse direction and orient themselves ro point south.
  7. 14. the cold and rigid outermost rock layer.
  8. 16. cintinents are in constant motio on the surface of earth.
Down
  1. 1. forms where two two plates past each other
  2. 2. the circulation of material caused by differences in temperature and density.
  3. 4. forms where two plate separate.
  4. 5. the mountain range in the middle of the oceans.
  5. 7. rising mantle material at mido-ocean ridgea creates the potential for plates to move away from the ridge with a force.
  6. 9. the process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.
  7. 12. states that earths surface is made of rigid slabs of rocks or plates that move with respect to each other .
  8. 15. continents wear once part of a supercontinent