Across
- 3. Is the process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away.
- 4. Which suggested that continents are in constant motion on the surface of earth.
- 9. A state in which magnetized objects would reverse direction and orient themselves to point south.
- 11. A state in which magnetized objects, such as compass needles, will orient themselves to point north.
- 12. Moutain ranges in the middle of the ocean.
- 13. States that earths surface is made of rigid slabs of rock, or plates that move with respect to each other.
- 15. Rising mantle material at mid ocean ridges creates the potential for plates to move away from the ridge with a force called.
- 16. forms where two plates slide past each other.
Down
- 1. Continents were once a part of a supercontinent called.
- 2. form where two plates collide.
- 5. Occurs and the magnetic field reverses direction.
- 6. The denser plate sinks below the more buoyant plate in a process called.
- 7. Forms where two plates separate when the seafloor spreads at a mid ocean ridge, lava erupts, cools, and forms new oceanic crust.
- 8. As a slab sinks, it pulls on the rest of the plate with a force called.
- 10. The circulation of material caused by differences in temperature and density.
- 14. The cold and rigid outermost rock layer is called the.