How do ocean currents help regulate Earth's climate?

moves cold water to tropics and hot water to poles

Which of the following is NOT true about upwellings?

it is a type of surface current

In order to increase the density of ocean water, what two things must happen?

decrease temperature and increase salinity

What causes El Nino conditions?

weak or reversal of trade winds

Explain how a convection current is created in the ocean.

warm water rises/ cold water sinks

If a warm ocean current flows near an area, it causes

warm air and a lot of precipitation

Due to the Coriolis Effect, ocean currents move

clockwise in North. Hemisphere and counterclockwise in South

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8.3 Ocean Currents

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ocean currents and climate

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Questions 22

Answers

1
This picture represents
deep ocean currents
Coriolis effect
surface currents
global winds
2
How do ocean currents help regulate Earth's climate?
keeps hot water near equator and cold water further away
moves cold water to tropics and hot water to poles
moves hot water towards the tropics and cold water to poles
heat does not get transferred
3
Which of the following is NOT true about upwellings?
it is beneficial for phytoplankton and zooplankton
it is a type of surface current
it is cold, nutrient rich water
it replaces the warmer surface water
4
What does this picture show?
surface ocean currents
deep ocean currents
wind patterns
all ocean currents
5
In order to increase the density of ocean water, what two things must happen?
increase temperature and decrease salinity
decrease temperature and increase salinity
decrease temperature and decrease salinity
increase temperature and increase salinity
6
What causes El Nino conditions?
Strong gulf stream
weak gulf stream
weak or reversal of trade winds
strong trade winds
7
What is this?
Normal
La Nina
El Nino
8
Explain how a convection current is created in the ocean.
warm water sinks/cold water rises
warm water rises/ cold water sinks
water doesn't rise or sink
cold water and warm water mixes
9
Thermohaline circulation is driven by
wind
gravity
radiation
density
10
If a warm ocean current flows near an area, it causes
cold air and a lot of precipitation
warm air and a lot of precipitation
warm air and little precipitation
cold air and little precipitation
11
Which of the following is NOT one of the 3 main factors that affect surface ocean currents?
Coriolis Effect
Global Winds
density
Continental Deflection
12
When is upwelling NOT going to happen during an ENSO event?
during "Normal"
during a La Nina
during an El Nino
13
Do ENSO events affect climate in East Tennessee?
No
Yes
14
Which is the most dense?
cold, salty water
warm fresh water
warm, salty water
cold fresh water
15
What is this?
Normal
El Nino
La Nina
16
How does the Gulf Stream affect London?
creates extreme weather patterns
does not affect it
creates a warmer climate
creates a colder climate
17
Deep Ocean currents DON'T depend on
density
temperature
salt
global winds
18
Due to the Coriolis Effect, ocean currents move
randomly
counterclockwise in North. Hemisphere and clockwise in South
clockwise in North. Hemisphere and counterclockwise in South
don't change direction
19
When freezing or evaporation occurs, what happens to the density of the water?
density decreases
it depends on which ocean it is in
nothing - density stays the same
density increases
20
What is the primary source of energy for ocean currents?
the winds
the sun
none of these
the salt
21
This is a MAJOR factor that causes the movement of surface currents
salinity
heat
wind
density
22
Which surface current affects weather/climate in East Tennessee?
the Gulf Stream current
the Alaskan Current
the Caribbean current
the California current

8.3 Ocean Currents Flashcards | StudBud