Across
- 3. the cold and rigid outermost layer
- 8. a state in which magnetized objects, such as compass needles, will orient themselves to point north.
- 10. the circulation of material caused by differences in temperature and density
- 11. forms where two plates collide,
- 12. the occurrence that the magnetic field reverses direction
- 14. the process in which the denser plate sinks below the more buoyant plate
- 15. the process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge
- 16. the suggestion that the continents are constantly moving.
Down
- 1. forms where two plates slide past each other
- 2. a state in which magnetized objects would reverse direction and orient themselves to point south
- 4. as a slab sinks, it pulls the rest of the plate with a force
- 5. earth's surface is made of rigid slabs of rock, or plates, that move with respect to each other.
- 6. the mountain ranges in the middle of oceans seafloor
- 7. forms where two plates separate
- 9. the mother continent; The time before seas separated us so.
- 13. this is the rising mantle material at mid-ocean ridges creates the potential for plates to move away from the ridge with a force