ch 7 oceanography quiz

Which of the following is not an eastern boundary current?

Gulf Stream

Deep ocean currents often move cold, dense water away from the poles.

True

Downwelling may be the result of winds blowing parallel to a coastline.

True

Dynamic topography can be used to compute current direction and velocity.

True

In the northern hemisphere, Ekman transport pushes surface water to the right of the wind direction.

True

The circular pattern of surface water currents is called a gyre.

True

The largest current by volume in the oceans is the Antarctic Circumpolar Current.

True

upwelling

movement of water from the bottom to the top of the water column

downwelling

movement of water from the top to the bottom of the water column

The Ekman spiral is driven by:

wind and the Coriolis effect

Identify the mismatched pair.

Labrador Current - Falkland Current

The Sargasso Sea is located in the:

North Atlantic ocean

When a meander from the Gulf Stream pinches off and isolates a body of water within the center of the North Atlantic gyre, the body of water is called a:

cold core ring

Judge the following sentence according to the criteria given below: Areas of downwelling are associated with prolific marine life BECAUSE the necessary nutrients are continuously replenished.

Both the assertion and the reason are incorrect

Which of the following is a western boundary current?

Brazil current

Compared to an eastern boundary current in a gyre, which of the following statements is true for a western boundary current?

Deeper currents, increased current velocity, warmer water, and narrower current are all true of western boundary currents

Compared to a western boundary current, which of the following statements is true for an eastern boundary current?

Eastern boundary currents are broad and slow.

An eastern boundary current is narrow and swift.

False

Deep ocean water does not travel across the equator.

False

The Agulhas Current is an example of which of the following types of currents?

Western Boundary Current

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern. Agulhas Current West Australian Current Canary Current Benguela Current California Current

Agulhas Current

Westward intensification causes:

All of these statements are the result of westward intensification.

The arrangement of water masses in the southern Atlantic Ocean from the surface to the bottom is:

Antarctic Intermediate Water, North Atlantic Deep Water, Antarctic Bottom Water.

The most dense ocean water is North Atlantic Deep Water.

False

Thermohaline circulation is wind-driven.

False

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern. Kuroshio Current Gulf Stream Somali Current North Equatorial Current Peru Current

Peru Current

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

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

Judge the following sentence according to the criteria given below: India's Southwest Monsoon provides abundant precipitation BECAUSE the air brought in from the Indian Ocean is warm and full of moisture.

The assertion and the reason are both correct, and the reason is valid.

Deep ocean water masses have characteristic temperatures and salinities.

True

During winter months, monsoon winds over the Indian Ocean:

flow from land to sea

The location where water flow is uninterrupted between the Pacific, the Atlantic, and the Indian Oceans is:

in the Southern Ocean

Ekman transport

net water movement to the left or right of the direction of the wind

Examine the five words and/or phrases and determine the relationship among the majority of words/phrases. Choose the one option that does not fit the pattern. decreased fish stock in coastal Peru Australian drought flooding rains in southeastern US Peruvian upwelling stops strong trade winds

strong trade winds

The unit of measurement used to describe the rate at which a volume of ocean water moves in a current is a:

sverdrup

In the southern hemisphere, the direction of Ekman transport is:

to the left of the wind direction

Equatorial currents are driven by the:

trade winds

Surface waters are pushed away from land and replaced by nutrient-rich bottom water through:

upwelling

geostrophic current

water flow driven by gravity and modified by the Coriolis effect

Strong upwelling occurs in all of the following except:

where there are strong thermoclines and pycnoclines and weak surface currents