2. EAC

3. Think… and answer!
1- Can you explain how precipitation affects salinity in oceans?
2- Can you explain how evaporation affects salinity in oceans?

4. OCEAN CURRENTS NOTES

5. Water Current:A stream of water flowing in a common direction.

6. 2 Types of Currents: Deep Currents Surface Currents

7. 1. Deep Currents Deep ocean currents are caused by differences in water temperature and salinity.

8. As you dive deeper into the ocean, the temperature decreases.
Warm water with low salinity
As you dive
deeper into
the ocean, the
temperature
decreases.
As you dive
Deeper into the
ocean, the salinity
increases.
Cold water goes down, Warm water goes up
Cold water with high salinity
-Salty water goes down, Fresh water goes up

9. Partner 1 ask partner 2-
As you increase in depth, what happens to the water’s temperature and salinity?
Partner 2 will reply by saying:
As you increase in depth, the water’s temperature ______ and its salinity _________.

10. 2. Surface Currents Driven by prevailing wind mainly effect the upper few hundred meters of the ocean.

11. SURFACE CURRENTS are controlled by 3 main factors:
3. The location of the Continents.
2. Air Currents
1. Earth’s Rotation

12. Partner 2 ask partner 1
What 3 factors affect surface currents?
Partner 1 will Reply by Saying:
The 3 factors that affect surface currents are: _____________________________.

13. Prevailing Wind moving across the surface of the ocean causes the water to move and flow creating currents

14. Due to the continents, the currents are deflected to the North and South to create circular currents called gyres.

15. The gyres spin:clockwise in the Northern hemisphere counter-clockwise in the Southern hemisphere because of the Coriolis effect

16. 1 to 2
What direction do ocean currents move in the northern hemisphere and in the southern hemisphere?
2 to 1
Ocean currents move _______ in the northern hemisphere and _____ in the southern hemisphere.

17. Surface currents can carry warm or cold water which can impact the climate in that area.
Warm water
Cold water

18. COLD CALIFORNIA CURRENT
WARM GULF
STREAM CURRENT
WARM KUROSHIO
CURRENT
Cold California Current
WARM South EQUATORIAL
CURRENT

20. Atlantic Ocean Found on the East Coast of the United States
Second largest ocean
More inflow from rivers than other oceans
Second youngest of the
oceans

21. Pacific Ocean Found on the West Coast of the United States
Largest ocean
Contains more islands than other oceans
Where El Niño and
La Niña occur
Where the Ring of Fire
occurs

22. Artic Ocean Found at the North Pole Home of the Polar Ice Cap
Smallest of the oceans

23. Indian Ocean Warmest ocean in the world Youngest of the oceans
Affected by monsoons

24. Antarctic Ocean Found at the South Pole 4th largest ocean
30 million years old

25. OCEAN CURRENTS T-MAP OCEAN CURRENTS DEEP CURRENTS SURFACE CURRENTS
_________________ __________________
__________________ __________________
There are ___ main types of ocean currents. The first ones are called
___________________ they are caused by _____________________
________________________. As you increase in ocean depth, temperature_________ and salinity__________. The second type of ocean currents are ________________. They are driven by the ___________ and are controlled by _______________, ________________, and ________________________.

26. SWBAT- Explain the differences between deep currents and surface currents by completing the Ocean Currents T-map