Across
- 4. tectonic plates moving together
- 6. fracture in rock
- 7. series of underwater mountains
- 8. flow of air or liquid that results from the transfer of thermal energy
- 9. continual movement of the continents over time
- 11. tectonic plates sliding past each other
- 14. semiliquid rock found beneath the earth's surface
- 15. deep valley that forms as a result of plates moving apart
- 16. centre of the earth
Down
- 1. tectonic plates moving away
- 2. layer of molten rock located beneath the earth's crust
- 3. theory that the middle of the ocean is spreading apart
- 5. movement of one plate under another
- 10. series of large waves that result from an underwater earthquake
- 12. deep ditch under the ocean
- 13. outer layer of the earth