Answers2001310 Earth Science Sem 1 - ReevesCycles of Matter

Ocean Circulation Answers

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1
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Which phenomenon causes oceans to bulge?

A
the blowing wind
B
the Coriolis effect
C
the moon’s gravity
D
the rotation of Earth
2
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When will the waves at the shore be the smallest and calmest?

A
when the tide is receding
B
when upwelling occurs
C
when the wind is not blowing
D
when the tide is coming in
3

Which ocean movement do power plants use to produce usable energy?

A
currents
B
drifts
C
tides
D
tsunamis
4

How are currents in the Pacific Ocean affected by El Niño?

A
Currents travel more slowly.
B
Rip currents are frequently formed.
C
All currents become deep ocean currents.
D
Warm water moves to the east instead of to the west.
5

Which statement explains what upwelling causes?

A
Upwelling causes tides to rise and fall.
B
Upwelling causes changes in the direction of currents.
C
Upwelling causes nutrients, minerals, and tiny organisms to rise.
D
Upwelling causes currents in the Pacific Ocean to change direction.
6

Which source provides the energy that causes most waves to form?

A
currents
B
earthquakes
C
sunlight
D
wind
7

Which phrase best describes surface currents?

A
up-and-down ocean movement caused by wind
B
waves that hit the shore at an angle and transport sand
C
streams of warm water flowing through the ocean and caused by wind
D
waves that approach the shore and cause their crests to fall into their troughs
8

Which phrase describes the tidal range?

A
the cause for the rotation of wind in a circular pattern
B
the difference between levels of high tide and low tide
C
the water that flows away from the shore and moves sand with it
D
the difference between the times the high tide and low time come in
9

Convection refers to the movement of heat through a fluid, such as water. Which best describes one way that convection influences the circulation of ocean water?

A
Cold water at the surface flows toward the poles and sinks as it cools.
B
Deep, warm water flows toward the equator and rises as it cools.
C
Warm water at the surface flows toward the poles and sinks as it cools.
D
Deep, cold water flows toward the equator and rises as it cools.
10

Which phrase describes neap tides?

A
occur four times a day
B
produce extra-low tidal ranges
C
caused only by the pull of the moon
D
occur at the same time as spring tides

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