1. Ocean Currents S6E3d Explain the causes of waves, currents, and tides.
Chapter 14 section 1
Ocean Currents
S6E3d Explain the causes of waves, currents, and tides.

2. Surface currents are caused by
Floods
Warm water
The wind
The equator

3. Ocean currents in the Northern and Southern Hemispheres turn
From west to east
In opposite directions
Clockwise
Against the Earth’s rotation

4. Which process increases the salinity of ocean water?
The Coriolis effect
Convection currents
Evaporation
Continental deflection

5. Deep currents form when
Cold air decreases water density
Warm air increases water density
The ocean surface freezes and solids from the warmer underneath
Salinity increases

6. Compared with surface currents, deep currents are
a. Colder and less dense
b. Warmer and less dense
c. Warmer and denser
d. Colder and denser

7. Which phrase describes a surface current?
Gets cool near the equator
Flows like a stream
Stretches from north to south
Creates global winds

8. How does the Coriolis effect make ocean currents appear to move?
Back and forth
In a curved path
Clockwise
Against the Earth’s rotation

9. Which continent deflects the Gulf Stream Current?
North America
South America
Africa
Asia

10. What replaces a cold current that sinks to the ocean floor?
Colder deep current
A warmer surface current
A colder surface current
A slower surface current

11. What is the name of the ocean current that warms the British Isles?
La Nina
California Current
Gulf Stream
Equatorial Countercurrent

12. What is used by the NOAA to collect data to predict an El Nino?
Buoys
Satellites
California Current
Sonar

13. The movement of cold, nutrient-rich water to the surface of the ocean is called______.
warm-water currents
cold-water currents
stream
upwelling