Across
- 2. natural ridgesin the middle of oceans
- 3. plates moving away from each other
- 4. plates crashing into each other
- 7. under the lithosphere
- 8. Pieces of land that makes up earth's surface
- 9. A supercontinent
- 10. the first layer of earth
Down
- 1. when a plate goes under another plate and becomes molten rock
- 5. the remains of an organism
- 6. made up of the mantle and crust of earth