Across
- 2. Submarine volcano with a flat top due to erosion
- 5. Deep trench formed when one plate subducts under another
- 7. Rapid temperature-change layer in ocean depth
- 9. Underwater mountains formed by seafloor spreading
- 10. Flat,deep region of the ocean floor covered by fine sediment
Down
- 1. Shallow submerged extension of the continent
- 3. Hot, mineral-rich water venting from seafloor cracks
- 4. Plate boundary where new seafloor is formed
- 6. Thick sediment deposit formed by turbidity currents
- 8. Deep boundary where the ocean meets the land underwater