Unit 7 Ocean lock in

Coastal upwelling along the coast of Chile is a result of winds from the ________ turning towards the ________ due to Ekman transport.

• south; right

• north; left

• north; right

• south; left

About what percent of the wind's energy is transferred to the ocean surface?

• Five

• Ten

• Fifty

• Two

• Twenty

The Ekman spiral is caused by ________.

• the wind and gravity

• pressure gradients

• the wind and the Coriolis effect

• density differences in the water column

• the pycnocline

Surface ocean currents are driven primarily by ________ and modified by ________.

• wind; gravity and density

• wind; the Coriolis effect and land

• latitude; differences in salinity and land

• density differences; differences in salinity and temperature

• density differences; the Coriolis effect and land

Deep ocean currents are driven primarily by ________ and caused by ________.

• latitude; differences in salinity and land

• density differences; differences in salinity and temperature

• wind; gravity and density

• density differences; the Coriolis effect and land

Compared to western boundary currents, eastern boundary currents are ________.

• broad and deep

• narrow and deep

• broad and slow

• shallow and swift

• deep and swift

Each subtropical gyre is composed of how many main currents that flow into one another?

• 2

• 4

• 1

• 3

• 5

Which of the following statements is true of surface ocean currents?

•  

  Surface currents concentrate warm water in the center of the gyre at mid latitudes.

• Surface currents form circular patterns in the major ocean basins called "gyres."

• Surface currents transport warm water toward the equator.

• Surface currents transport cold water toward the poles.

• Surface currents occur within and below the pycnocline.

Diverging surface waters are areas of ________ and ________ productivity.

• downwelling; high

• upwelling; low

• downwelling; low

• upwelling; high

Which of the following currents contributes to the South Western United States being arid?

• California Current

• Canary Current

• North Pacific Current

• North Equatorial Current

• Brazil Current