"Marine Science": HTML5 Crossword

Across

5. A layer of frozen polar soil. (10)
6. The spiral change in the movement of water in the water column when the water is pushed by wind. (5,9)
9. When a substance expands with increased temperature. (0,7,9)
11. The sinking of surface water that has become more dense than water below. (8)
13. The sinking of surface water that is denser than underlying water layers. (11)

Down

1. A large, nearly circular system of wind-driven surface currents that center around latitude 30° in both hemispheres. (5)
2. Waters that flood coastal areas as cyclonic storms make landfall. (0,5,6)
3. A global circulation pattern in which water cycles throughout the ocean basins. (5,5,8,0)
4. The winds that blow from west to east at middle latitudes. (11)
7. The current that carries water from the tropics up the east coast of the United States before turning east and bringing warm water to Europe. (0,4,6)
8. Consistent variation in temperature over a long period of time. (0,7,6)
9. A zone in the water column that shows a sudden change in temperature with depth. (12)
10. Steady winds that blow from east to west toward the Equator, replacing the hot air that rises at the Equator. (5,5)
12. The process by which colder water rich in nutrients rises from a lower to a higher depth. It includes coastal and equatorial upwelling. (9)
14. The movement of air over Earth’s surface. (4)