1. You do not have to copy the question!
Warm-up
You do not have to copy the question!
Explain what density is in your own words.
Why do you think hot water floats on top of cold water?
Why might the density of ocean water change as you move away from the equator?

2. “Ocean Circulation”
16.1

3. What does it mean to “circulate?”
Ocean water is always moving!

4. What causes water movement?
Forces!
Push or Pull
Wind
Friction
Surface currents
Earth’s Rotation
Density

5. In which ways does water move?
Surface Circulation
Surface Current
Water in horizontal motion
Caused by wind friction!
Gyre
“Gyros” = circle
Huge surface current!
5 global gyres.

6. 5 Ocean “Gyres”

7. is his jacket flying back?
Why
is his jacket flying back?
Wind!
Friction!

8. Wind causes currents!
Wind Friction = Force = Push/Pull

9. Coriolis Effect (also) causes currents!
Earth’s rotation
W  E
“Bends” motion of:
Wind
Water

10. Example: Shoot a rocket from Equator to North Pole.
Earth continues to spin
“Bends” path

11. Currents affect climate!
Transfer Heat!
Moderate Tempo

12. Other currents?! Deep Ocean Circulation! Density Currents Caused By:
Below ↓
Density Currents
↑Density =
Caused By:
Latitude
Evaporation = __ Salinity = __ Density
Sinks

13. Global Conveyor Belt