Plate Tectonics
Across
- 4. where two plates slide past eachother
- 6. The mountain ranges in the middle of the oceans.
- 8. occurs and the magnetic field reverses direction
- 11. is the process by which new oceanic crust forms along a mid-ocean ridge and older oceaniccrust move away from the ridge
- 12. where two plates form separate
- 13. all the continents were once a supercontinent
- 16. is where the circulation of material is caused by differences in temperature.
Down
- 1. states that the earth's surface is made of rigid slabs of rock, or plates, that move with respect to each other.
- 2. a state in which magnetized objects would reverse direction and orient to point south.
- 3. slab pull is thought to be a more significant force than ridge push in moving tectonic plates.
- 5. ridge push moves lithosphere in opposite directions away from the mid-ocean ridge.
- 7. two plates collide.
- 9. as compass needles, will orient themselves to point worth.
- 10. suggested that continents are in constant motion on the surface of the earth.
- 14. a state in which magnetized objects
- 15. the denser plate sinks below the more buoyant plate in a process called subduction.