Gol111 Chapter 9

Front 1

the most dense water in the ocean currents is the

Back 1

coldest and saltiest.

Front 2

Benjamin Franklin was the first person to recognize the extent of the _______ and to publish a navigational chart of it.

Back 2

gulf stream.

Front 3

which current within a northern hemisphere gyre would you expect to have the lowest salinity and temperature?

Back 3

an eastern boundary current.

Front 4

geographic gyres can be described by which of the following statements?

Back 4

all of the above are true.

Front 5

Britain's weather is ___________ than would be expected at that latitude because of the influence of surface currents.

Back 5

warmer and wetter.

Front 6

the amount of seawater flowing in the geostrophic currents of the world ocean is approximately equal to the total amount of water flowing in all the Earths fresh water rivers. true or false.

Back 6

false.

Front 7

the immediate source of most of the energy for ocean currents is:

Back 7

wind.

Front 8

wind moving from the north along the california coast causes water moving along the coast to:

Back 8

move away from shore (west).

Front 9

which of these is generally not an el nino effect?

Back 9

a decline in the exotic species of fish and other forms of marine life in affected waters.

Front 10

western boundary currents can have well-defined edges. true or false.

Back 10

true.

Front 11

during an el nino event,

Back 11

a strong equatorial countercurrent develops in the pacific.

Front 12

generally the fastest and deepest ocean currents are:

Back 12

western boundary currents.

Front 13

the earth's rotation influences currents by a force (or acceleration, to be correct) known as:

Back 13

coriolis effect.

Front 14

the ultimate source of most of the energy for ocean currents is:

Back 14

the sun.

Front 15

san francisco's characteristic cold and foggy weather is caused by a:

Back 15

cold eastern boundary current

Front 16

currents tend to move in great _____ patterns in the northern hemisphere.

Back 16

clockwise.

Front 17

countercurrents and undercurrents generally move _______ than the surface current about, and in ______ direction.

Back 17

slower...the opposite.

Front 18

most deep bottom water forms

Back 18

near the ocean surface in the Antarctic.

Front 19

the only ocean current that continues in an uninterrupted circle around the circumference of the earth without encountering land is the:

Back 19

west wind drift.

Front 20

a system of four currents completing a flow circuit around the periphery of an ocean basin is collectively called:

Back 20

a gyre.