Plate Tectonics (Chapter 7)
Across
- 2. The denser plate sinks below the more buoyant plate in a process called ______________.
- 6. ______________________________ form where two plates collide
- 7. _____________ which suggested that continents are in constant motion on the surface of Earth.
- 8. ______________ states that Earth's surface is made of rigid slabs of rock, or plates, that move with respect to each other.
- 9. the circulation of material caused by difrences in tempecher is called ______________.
- 10. The cold and rigid outermost rock layer is called the _______________.
- 11. _______________________ forms where two plates slide past each other.
- 14. The mountain ranges in the middle of the oceans are called ______________.
- 15. Rising mantle material at mid-ocean ridges creates the potential for plates to move away from the ridge with a force called ________________.
Down
- 1. ______________________ forms where two plates separate.
- 2. As a slab sinks, it pulls on the rest of the plate with a force called _________.
- 3. ___________________ is a state in which magnetized objects would reverse directions and orient themselves to point south.
- 4. continents were once a supercontinent called _______.
- 5. _____________ occurs and the magnetic field reverses direction.
- 12. _________ is a state in which magnetized objects, such as compass needles, will orient themselves to point to the north.
- 13. _________________ is the process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.