AnswersSS4 PGCPS EARTH SPACE OC SUMMER 2027 - 794243Ocean Circulation

Ocean Circulation Answers

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1
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How frequently do most coastal areas experience high tides?

A
twice a day
B
twice a month
C
four times a day
D
four times a month
2
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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.
3

Why are electrical outputs from a turbine generator highest during a spring tide?

A
A high tide comes in faster.
B
The gravitational pull of the moon is less.
C
The Sun and the moon pull in opposite directions.
D
The difference between high tide and low tide is the greatest.
4

Which factor contributes to the formation of tides that turn turbines to create energy in the ocean?

A
wind speed
B
water density
C
Earth’s rotation
D
water temperature
5

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
6

Which event causes tides?

A
the blowing of the wind
B
the movement of warm and cool water
C
the interaction of the moon, the Sun, and Earth
D
the mixing of surface water and deep ocean water
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 two words identify the scientific parts of a wave?

A
breaker and crest
B
crest and trough
C
current and breaker
D
drift and current
9

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

A
currents
B
drifts
C
tides
D
tsunamis
10

Which phenomenon causes oceans to bulge?

A
the blowing wind
B
the Coriolis effect
C
the moon’s gravity
D
the rotation of Earth

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