1. Movement of Ocean Water

2. Ocean currents – the movement of water within the ocean water
Ocean currents – the movement of water within the ocean water. Caused by water temperature, water salinity, water density, wind, and gravitational pull from the moon.

3. Gyre – A circular motion of water in each of the major ocean basins.

4. Upwelling – The upward movement of ocean water from deep in the ocean to the surface.

5. Downwelling – The downward movement of ocean water from the surface.

6. El Nino – A time when surface waters are warmer causing nutrient-rich cold water to stay close to the bottom of the ocean.

7. El Nino

8. The Earth