WorksheetsOcean Currents
Total questions: 45
Worksheet time: 23mins
The movement of deep, cold, nutrient filled water to the surface of the ocean is..
Ocean Current
Upwelling
Deep Currents
Surface Currents
What affects the density of water?
Salt
Temperature
The seasons of the year
Both temperature & salt
The Coriolis Force
Why is upwelling important?
Upwelling regulates ocean temperature
Upwelling provides nutrient rich water that sustains life
Upwelling controls the tides
Upwelling helps sailors to navigate the seas
What are a circular system of currents in the Earth's major oceans?
ocean current
gyre
upwelling
conveyor belt
The Coriolis Effect is caused by what?
The wind blowing
Earth's gravity pulling things down
The rotation of the Earth
The pull of the Moon
The Coriolis effect influences which of the following things (Check all that apply)
Currents
Winds
Time zones
Gravity
In the Northern hemisphere, winds and currents get deflected to the ______ due to the Coriolis effect
right
left
______ causes surface currents.
The Coriolis Effect
gravity
density differences
wind
______ causes deep ocean currents
The Coriolis Effect
gravity
wind
density differences
As plants and animals in the ocean die, the nutrients produced from their decay _____.
are recycled by the Global Conveyor Belt
sink to the bottom
are destroyed by sunlight
become coral reefs
Nutrients are brought to the surface for phytoplankton to use at _______.
gyres
eddies
upwellings
the equator
_______ causes the Coriolis Effect
Earth's rotation
gravity
wind
density
The __________ is a surface current that flows along the eastern US and brings warm water to Europe.
California Current
Gulf Current
North American Gyre
Arctic Current
Gyres in the southern hemisphere are surface currents that turn _________ due to the Coriolis Effect.
clockwise
counterclockwise
toward the right
toward the bottom of the ocean
________ and _______ affect the ocean's density and cause the Global Conveyor Belt to travel
gravity and the Coriolis Effect
temperature and salinity
wind and climate
temperature and the Coriolis Effect
The more scientific name of the Global Conveyor Belt is _____.
halinethermal circulation
thermohaline circulation
thermodensity circulation
How are wind's named?
From the direction they come from
From the direction they blow towards
From their temperature
From their speed
Surface currents move at a ______ ° angle from the direction of the wind.
30°
45°
60*
90°
Surface currents in the southern hemisphere move
clockwise
counter clockwise
Where are warm ocean currents found?
in the western ocean basin
in the eastern ocean basin
Where are cold currents found?
Western coasts of continents
Eastern coasts of continents.
Where is a major downwelling location?
Equator
Greenland
Alaska
India
Which bottom water has the highest density?
Antarctic Bottom Water
North Atlantic Deep Water
How can winds cause dense water to rise to the surface?
Wind can push surface water away from land.
Wind can push surface water towards land.
Wind can rise at low pressures, pulling up on the water.
Wind can generate waves, pulling water to the surface.
During a(n) ____ event, trade winds are much stronger than usual.
El Nino
La Nina
Normal
Partly sunny
Normally, atmospheric upwelling and rain occurs in the:
FAR Western Pacific
Central Pacific
Western Pacific
During an El Nino, trade winds are typically...
about average
stronger
weaker
The image is of a(n):
El Nino event
La Nina event
Non-El Nino (normal conditions)
The picture below is of a(n) ____ event.
Non-El Nino (Normal)
El Nino
La Nina
The picture represents a(n) ___ event.
El Nino
La Nina
Non-El Nino (normal conditions)
Which of the following will bring nutrients to areas of need?
El Nino
La Nina
Downwelling is important because it
transports oxygen to bottom water
transports nutrients to bottom water
transports nutrients to the surface water
transports oxygen to the surface water
In the northern hemisphere, wind coming from the south along a western coast of a continent coastline will create
upwelling
downwelling
Which current is the Brazil Current?
Current T
Current E
Current D
Current F
Current U
The Peru current is a
Warm Current
Cold Current
Which current is the Gulf Stream?
Current A
Current B
Current C
Current D
Current O
The Gulf Stream is a
Warm Current
Cold Current
Which current is the Canary?
Current A
Current B
Current C
Current D
Current O
What direction is current I flowing?
towards the north
towards the south
