AnswersSS4 PGCPS EARTH SPACE OC SUMMER 2027 - 794243Ocean Circulation

Ocean Circulation Answers

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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
2
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Which best describes a tsunami?

A
large powerful wave caused by an earthquake
B
when the waves hit the shore at an angle and transport sand
C
alternating rise and fall of the ocean
D
an irregular climate event caused by ocean currents in the Pacific Ocean
3

Which phenomenon causes oceans to bulge?

A
the blowing wind
B
the Coriolis effect
C
the moon’s gravity
D
the rotation of Earth
4

Ocean circulation is the large-scale movement of water in the ocean. It involves the transport of heat through convection, which is the movement of heat through liquids and gases.Which statement describes how convection moves heat in the ocean during non-El Niño (normal) years?

A
Convection moves heat toward the west.
B
Convection moves heat toward the east.
C
Convection moves heat toward the north.
D
Convection moves heat toward the south.
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

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.
7

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
8

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
9

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
10

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.

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