Across
- 3. - The circulation of material caused by differences in temperature and density
- 5. ridge - The mountain ranges in the middle of the oceans
- 6. - continents that were once a part of a supercontinent.
- 8. boundary - forms where two plates slide past each other
- 9. boundary - forms where two plates separate
- 10. - The denser sinks below the more buoyant plate
Down
- 1. tectonics - Earth’s surface is made of rigid slabs of rocks, or plates, that move with respect to each other
- 2. drift - continents that are in constant motion on the surface of Earth
- 4. spreading - The process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge
- 5. reversal - When the magnetic field reverses direction
- 7. boundary - forms where two plates collide