Across
- 2. any continuous mass of land
- 4. a narrow ditch
- 5. Earth's top layer
- 6. an elevated portion of Earth's surface
- 8. an area's limit
- 9. Earth's lower layer
- 11. large sections of Earth's crust that move
- 12. a supercontinent from 250 mil years ago
- 13. a narrow hilltop
Down
- 1. boundaries that drift apart
- 3. a large expanse of sea
- 5. boundaries that come closer together
- 7. series of waves that cause water displacement
- 10. a sudden shaking of the ground