Across
- 5. Long narrow depression located in the deep-ocean basin
- 7. Shallow parts of the ocean floor
- 8. Flat areas of the deep-ocean basin where the ocean is more than 4 km deep
- 9. system that uses acoustic signals and return echoes to determine location of objects
Down
- 1. The Deep part of the ocean beyond the continental margin
- 2. cylinders of sediment that are collected by drilling into sediment layers on the ocean floor
- 3. Body of water that is smaller than an ocean partially surrounded by land
- 4. Potato-shaped lumps of mineral deposits
- 6. Body of salt water that that covers 3/4th of the Earth's surface
- 10. Study of the characteristics, chemical composition, and life-forms of the ocean