chapter 7 vocabulary

4. A state in which magnetized objects would reverse direction and orient themselves ro point south.
5. the denser plate sinks below the mote buoyant plate in a process.
7. the circulation of material caused by differences in temperature and density.
9. forms where two plates collide
11. continents wear once part of a supercontinent
12. the cold and rigid outermost rock layer.
13. forms where two plate separate.
15. occurs and the magnetic field reverses direction.
16. as a slab sinks it pulls on the rest of the plate with a force.

1. states that earths surface is made of rigid slabs of rocks or plates that move with respect to each other .
2. the process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.
3. the mountain range in the middle of the oceans.
6. cintinents are in constant motio on the surface of earth.
8. rising mantle material at mido-ocean ridgea creates the potential for plates to move away from the ridge with a force.
10. forms where two two plates past each other
14. a state in which magnetized objects