AnswersFHS 2016 TX-Earth and Space ScienceGeologic Maps

Currents Answers

3 verified answers
1
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Ocean currents flow from east to west near the

A
Gulf Stream.
B
poles.
C
equator.
D
global winds.
2
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The curved paths of global winds and surface currents are caused by

A
the revolution of the Earth.
B
the Coriolis effect.
C
warm air near the equator.
D
continental deflection.
3

How does the Coriolis effect make ocean currents appear to move?

A
back and forth
B
in a curved path
C
clockwise
D
against the Earth’s rotation
4

Compared with surface currents, deep currents are

A
colder and less dense.
B
warmer and less dense.
C
warmer and denser.
D
colder and denser.
5

A stream-like movement of ocean water far below the ocean surface is a

A
gravitational current.
B
Coriolis current.
C
surface current.
D
deep current.
6

Which of these events happens first in Earth’s polar regions?

A
The dense water sinks.
B
The water travels as a deep current.
C
Water molecules move closer together.
D
Cold air chills water molecules.
7

What causes ocean water to become denser?

A
the salinity of water and high temperatures
B
the salinity of water and low temperatures
C
the concentration of oxygen and high temperatures
D
the concentration of oxygen and low temperatures
8

What force makes cold water sink toward the ocean floor?

A
global winds
B
the sun
C
gravity
D
the Coriolis effect
9

In 1947 Thor Heyerdahl sailed a simple raft from Peru to Polynesia, following the ocean currents for more than 6,000 kilometers. Which statement accurately describes what Heyerdahl proved by this voyage?

A
Ancient Peru was settled by people from Polynesia.
B
People from ancient Peru were the first settlers of Polynesia.
C
It would have been possible for people from ancient Peru to reach Polynesia by following ocean currents.
D
Polynesia was settled accidentally when rafts from Peru were carried out by ocean currents.
10

What are the two causes of density in deep current waters?

A
Salinity (how much salt) of the water and high temperatures
B
Salinity (how much salt) of the water and low temperatures
C
Oxygen content of the water and high temperatures .
D
Oxygen content of the water and low temperatures

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