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  -Discuss the relationship between Ekman transport and geostrophic flow within a gyre. How does this relationship contribute to western intensification? -Discuss the relationship between Ekman transport and geostrophic flow within a gyre. How does this relationship contribute to western intensification?

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Ekman transport and geostrophic flow are...

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During winter months, monsoon winds over the Indian Ocean:


A) flow from land to sea and are dry.
B) flow from land to sea and are wet.
C) flow from sea to land and are dry.
D) flow from sea to land and are wet.
E) the direction of airflow is unchanged but precipitation increases.

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Discuss the biological impact of upwelling and downwelling on marine ecosystems. Provide examples of marine systems that are impacted by these processes in your answer.

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Upwelling and downwelling are important ...

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Match the term or person with the appropriate phrase. You may use each answer once, more than once or not at all. -Canary Current


A) tropical latitudes
B) cold current, northern hemisphere, temperate latitudes
C) northern hemisphere, temperate latitudes, warm current
D) cold current, southern hemisphere, temperate latitudes
E) cold current, polar latitudes, southern hemisphere

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Which of the following is true of surface water circulation near Antarctica?


A) A gyre is formed here.
B) Two circumpolar currents dominate it, one current that moves water to the east and one current that moves water to the west.
C) It is dominated by water flow directly away from the polar region toward the north.
D) The surface ocean has no strong currents.
E) The circulation of water around the Antarctic continent is driven by density differences.

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Surface currents affect about 90% of the world's ocean water.

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Match the term or person with the appropriate phrase. You may use each answer once, more than once or not at all. -Gulf Stream


A) tropical latitudes
B) cold current, northern hemisphere, temperate latitudes
C) northern hemisphere, temperate latitudes, warm current
D) cold current, southern hemisphere, temperate latitudes
E) cold current, polar latitudes, southern hemisphere

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Thermohaline circulation is driven by:


A) density differences.
B) the Coriolis effect.
C) latitude.
D) longitude.
E) wind.

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


A) at a 45° angle from the wind direction.
B) perpendicular to the wind direction.
C) to the east of the wind direction.
D) to the left of the wind direction.
E) to the right of the wind direction.

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Which type of current flow moves in a circular path around a subtropical convergence, reflecting Ekman transport, gravity, and the Coriolis effect?


A) counter-current circulation
B) density-driven circulation
C) geostrophic circulation
D) Langmuir circulation
E) thermohaline circulation

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Monsoons are seasonal pressure systems that develop at lower latitudes over continents, which cause changes in seasonal winds and precipitation patterns.

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

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During its time in the deep ocean, deep water can become enriched in oxygen.

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Match the term or person with the appropriate phrase. You may use each answer once, more than once or not at all. -Kuroshio Current


A) tropical latitudes
B) cold current, northern hemisphere, temperate latitudes
C) northern hemisphere, temperate latitudes, warm current
D) cold current, southern hemisphere, temperate latitudes
E) cold current, polar latitudes, southern hemisphere

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All are true of the Antarctic Circumpolar Current except:


A) the Antarctic Circumpolar Current contributes to the development of Antarctic bottom water in the Weddell Sea.
B) the Antarctic Circumpolar Current contributes to upwelling off the Antarctic coast producing an area of high primary productivity in Antarctic summer.
C) the Antarctic Circumpolar Current flows in a counterclockwise direction around the southern hemisphere at 60°S latitude.
D) the Antarctic Circumpolar Current flows in the opposite direction to the East Wind Drift, a current the flows close to the Antarctic continent.
E) the Antarctic Circumpolar Current is created by the prevailing winds at that latitude.

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


A) convergence.
B) downwelling.
C) land breezes.
D) sea breezes.
E) upwelling.

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The worldwide effects of El Niño include all of the following except:


A) coral reef deaths in the Pacific Ocean.
B) crop failure in the Philippines.
C) drought in the U.S. Gulf coastal states.
D) increased Pacific cyclone activity.
E) water shortages in Sri Lanka.

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

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The circular movement of surface water currents driven by the major wind belts are called gyres.

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Compared to Antarctic Bottom Water, North Atlantic Deep Water is:


A) colder.
B) denser.
C) higher in nutrients.
D) higher in salinity.
E) lower in oxygen.

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