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WorksheetsOcean Currents
Total questions: 26
Worksheet time: 13mins
Name
Class
Date
1.
Ocean current movement is mainly caused by
a)
the magnetic field of Earth
b)
temperature differences in the water
c)
the gravitational pull from the sun
d)
runoff of fresh water from land
2.
Warm ocean currents are found
a)
near the poles
b)
near the horse latitudes
c)
deep under the ocean
d)
near the equator
3.
Cold ocean currents are found
a)
near the poles
b)
near the horse latitudes
c)
deep under the ocean
d)
near the equator
4.
Warm currents are usually found
a)
deep under the ocean
b)
at the surface
c)
at the poles
d)
in the southern hemisphere
5.
Cold currents are usually found
a)
deep under the ocean
b)
at the surface
c)
at the poles
d)
in the southern hemisphere
6.
Cold currents move
a)
from the poles to the equator
b)
from the horse latitudes to the doldrums
c)
in a circle in the doldrums
d)
from the equator to the poles
7.
Warm currents move
a)
from the poles to the equator
b)
from the horse latitudes to the doldrums
c)
in a circle in the doldrums
d)
from the equator to the poles
8.
Global ocean circulation begins with a surface current of
a)
cooler water at the poles moving to equator
b)
cooler water at the equator moving to poles
c)
warmer water at poles moving to equator
d)
warmer water at equator moving to poles
9.
Surface currents are primarily caused by
a)
gravity
b)
winds
c)
continental deflection
d)
upwellings
10.
Due to the Coriolis Effect, currents south of the equator move in a
a)
clockwise direction
b)
north to south direction
c)
west to east direction
d)
counterclockwise direction
11.
Due to the Coriolis Effect, currents north of the equator move in a
a)
clockwise direction
b)
north to south direction
c)
west to east direction
d)
counterclockwise direction
12.
Which type of ocean current can affect the weather and climate of a nearby landmass?
a)
upwelling
b)
deep current
c)
surface current
d)
only cold currents
13.
When heading toward a landmass, what causes an ocean current to flow around it?
a)
wind strength
b)
continental deflection
c)
Coriolis Effect
d)
temperature
14.
Deep ocean currents are caused by
a)
winds and weather
b)
underwater volcanoes
c)
temperature and density
d)
nutrients in the water
15.
Why do temperatures differences in ocean water drive the currents?
a)
the temperatures have different colors
b)
the temperatures have different densities
c)
the temperatures have different speeds
d)
the temperatures have different directions
16.
Warm water in the ocean
a)
rises and flows along the surface
b)
sinks and flows along the floor
c)
flows through the middle
d)
mixes quickly with cold water
17.
Cold water in the ocean
a)
rises and flows along the surface
b)
sinks and flows along the floor
c)
flows through the middle
d)
mixes quickly with cold water
18.
What is the warm water current off the east coast of the United States?
a)
Jet Stream
b)
Gulf Stream
c)
California
d)
Humboldt
19.
What is the cold water current off the west coast of the United States?
a)
Jet Stream
b)
Gulf Stream
c)
California
d)
Humboldt
20.
Where is water the coldest in the ocean?
a)
at the surface
b)
10 feet below the surface
c)
the ocean floor
d)
halfway between the surface and floor
21.
If warm currents suddenly became cold, and cold current suddenly became warm. What would happen?
a)
currents would flow faster
b)
currents would switch directions
c)
current would start tsunamis
d)
nothing would change
22.
What causes temperature differences in ocean water?
a)
global winds blowing on the surface of the ocean
b)
differences in the amount of radiation received from the sun
c)
differences in the pull of Earth's gravity
d)
daily tectonic plate activity under ocean floor
23.
What is an upwelling?
a)
wind current push away surface water, allowing deep water to flow up
b)
warm rainwater mixes with surface water
c)
cold surface water from the poles sinks
d)
surface runoff from rivers causes warm water to sink
24.
If a warm ocean surface current flows by an landmass in the North Atlantic Ocean near Iceland, how will it effect its climate?
a)
bring cold, rainy weather
b)
bring freezing, snowy weather
c)
bring warm, mild weather
d)
bring hot desert like conditions
25.
Ocean water with a high salinity is...
a)
more dense and sinks
b)
less dense and floates
c)
more dense and floats
d)
less dense and sinks
26.
What is El Nino?
a)
a young evil cowboy
b)
a bad storm with hurricanes
c)
winds stops and weather patterns change
d)
a peaceful warm spring times
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