plate tectonics
Across
- 3. continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere,
- 4. fluid layer about 2,260 km (1,400 mi) thick, composed of mostly iron and nickel
- 6. the largest and deepest of Earth's five oceanic divisions.
- 7. he movement of the plates that make up Earth's crust
Down
- 1. the largest and deepest of Earth's five oceanic divisions.
- 2. or extending in different directions from a common point
- 5. s the act of emitting radiation spontaneously