Plate Tectonics
Across
- 2. forms where two plates slide past each other
- 3. form where two plates collide
- 5. a state in which magnetized objects, such as compass needles, will orient themselves to point north
- 6. the denser plate sinks below the more buoyant plate in a process
- 9. is the process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge
- 11. the circulation of material caused by differences in temperature and density
- 12. suggested that continents are in constant motion on the surface of Earth
- 13. the cold and rigid outermost rock layer
- 14. rising mantle material at mid-ocean ridges creates the potential for plates to move away from the ridge with a force called
- 15. Earth's surface is made of rigid slabs of rock, or plates, that move with respect to each other
Down
- 1. a state in which magnetized objects would reverse direction and orient themselves to point south
- 4. forms where two plates separate
- 7. the mountain ranges in the middle of the oceans
- 8. occurs and the magnetic field reverses direction
- 10. A theory that all the continents were connected at some point