Across
- 3. Plate movement when two plates move toward each other.
- 6. The driving force behind plate tectonics; occurs in the asthenosphere.
- 7. Plate movement when two plates slide past each other.
- 9. The upper mantle and crust
- 10. Huge rock slabs that the lithosphere is broken up into.
- 11. A crack in the Earth's surface between two divergent plates.
Down
- 1. A mid-ocean chain of undersea mountains that circle the Earth like the seam of a baseball.
- 2. Geological formations that occur at divergent boundaries.
- 4. The layer of the Earth between the crust and the core.
- 5. Plate movement when two plates move away from each other.
- 8. The bottom or floor of the ocean.