MB 9b: Question Preview (ID: 3052)

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The primary force that provides energy for surface currents are
a) wind b) ekman transport c) coriolis effect d) gyres
Circular flow in each ocean basin is call a gyre
a) true b) c) d) false
there are ___ gyres found in ____
a) two, equatorial regions b) five, the North Atlantic c) two, polar regions d) five, in each major ocean basin
Gyres are called ________ currents, they tend to flow
a) equatorial, quickly b) geostrophic, clockwise c) equatorial, clockwise in North hemisphere, counter clockwise in Southern Hemisphere d) geostrophic, clockwise in North hemisphere, counter clockwise in Southern Hemisphere
Currents tend to flow around the periphery of an ocean basin because
a) of the elevated surfaces level in the center and the Coriolis effect b) the edge of the basin is deeper c) d)
Western boundary currents flow more quickly than eastern boundary currents partly becuase the trade winds pile water on the western ocean boundary
a) true b) false c) d)
Although different water layers move in different directions in an Ekman spiral, the overall effect of Ekman transport is to move a currently directly in line with the wind
a) true b) c) d) false
A counter current runs _________ an adjacent current. It is thought to be formed by water ____________ a basin faster than it ____________
a) beneath, exiting, evaporating b) beneath, entering, evaporating c) beneath, the same as, counter current d) opposite to, entering, exits
An undercurrent runs _____________ an adjacent current. The reason why it forms is _________
a) perpindicular to, the same as for a counter current b) beneath, unclear c) perpendicular to, unclear d) beneath, the same as for a counter current
both upwellings and downwellings can result from a wind parallel to the shore
a) true b) false c) d)
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