Earth's Moving Crust
Across
- 5. A mid-ocean chain of undersea mountains that circle the Earth like the seam of a baseball.
- 8. A type of touch volcanic rock that makes up most of the ocean's basins, mid-ocean ridges, and plates.
- 10. A crack in the Earth's surface between two divergent plates.
- 11. The study of the structure of the Earth's surface.
- 12. A mountain peak on the ocean floor that does not reach the surface of the water.
Down
- 1. Plate movement when two plates move away from each other.
- 2. Hot, molten rock deep below the Earth's surface.
- 3. Plate movement when two plates move toward each other.
- 4. The layer of the Earth between the crust and the core
- 6. The bottom or floor of the ocean.
- 7. Huge rock slabs that form the Earth's crust
- 9. The bottom of the deep ocean below the continental shelf, usually deeper than 13,000 feet.