Across
- 5. currents that move and mix water around the world
- 7. mountain rising from the ocean floor
- 8. gently sloping shallow area that extends outward from the edge of each continent
- 12. long chains of mountains on the ocean floors producing new seafloor
Down
- 1. largest and most powerful surface current in the North Atlantic Ocean
- 2. long deep valley on the ocean floor where the old ocean floor sinks back into the mantle
- 3. currents rush of water flowing rapidly back to sea through a narrow opening
- 4. steep edge of a continental shelf
- 6. white-capped waves that crash onto the ocean floor with decreasing speed and changes in shape
- 9. currents affecting water to a depth of hundreds of meters driven by winds
- 10. wave caused by an earthquake beneath the ocean floor
- 11. broad area covered with thick layers of mud and silt