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WorksheetsOcean Density and Currents
Total questions: 20
Worksheet time: 18mins
Name
Class
Date
1.
Why do some substances float on water?
a)
they are warmer than water
b)
they are cooler than water
c)
they are more dense than water
d)
they are less dense than water
2.
Put the liquids in order from most dense to least dense?
a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1,
d)
4, 3, 1, 2
3.
______ causes surface currents.
a)
The Coriolis Effect
b)
gravity
c)
density differences
d)
wind
4.
______ causes deep ocean currents
a)
The Coriolis Effect
b)
gravity
c)
wind
d)
density differences
5.
Decreasing ocean temperature causes the density of the water to ______.
a)
decrease
b)
increase
c)
stay the same
d)
fluctuate
6.
Nutrients are brought to the surface for phytoplankton to use at _______.
a)
gyres
b)
eddies
c)
upwellings
d)
the equator
7.
The __________ is a surface current that flows along the eastern US and brings warm water to Europe.
a)
California Current
b)
Gulf Current
c)
North American Gyre
d)
Arctic Current
8.
Warm ocean currents generally come from
a)
The North Pole
b)
The South Pole
c)
The Equator
d)
Both A and B
9.
The Coriolis Effect is caused by
a)
Earth rotating around the sun
b)
Earth rotating on its axis
c)
The tides
d)
Gravity
10.
Decreasing ocean temperature causes the density of the water to ______.
a)
decrease
b)
increase
c)
stay the same
d)
fluctuate
11.
As you go deeper in the ocean, the water is colder and less salty.
a)
True
b)
False
12.
Due to the Coriolis Effect, water in the northern hemisphere moves
a)
clockwise
b)
counter clockwise
c)
both
d)
neither
13.
Due to the Coriolis Effect, water in the southern hemisphere moves
a)
clockwise
b)
counter-clockwise
c)
both
d)
neither
14.
Cold ocean currents generally come from
a)
The North Pole
b)
The South Pole
c)
The Equator
d)
Either Pole
15.
Cold water from deep in the ocean contains
a)
sea turtles
b)
surface currents
c)
solar energy
d)
nutrients
16.
What factors create deep ocean currents?
a)
Increase in salinity; increase in temperature
b)
Decrease in salinity; decrease in temperature
c)
Increase in salinity; decrease in temperature
d)
Decrease in salinity; increase in temperature
17.
The Coriolis effect causes ___________.
a)
global winds and surface currents to move in a curved path instead of a straight line
b)
continental deflection
c)
the Earth to rotate on its axis
d)
global winds and deep ocean currents to move in a curved path instead of a straight line.
18.
Where does the intial source of energy come from that creates winds and thus surface currents?
a)
The moon
b)
The sun
c)
The wind
d)
The rotation of the Earth
19.
Does the gulf stream originate near the Equator or the Poles?
a)
Equator
b)
Poles
20.
How does the Gulf Stream affect the climate in Florida and the United Kingdom?
a)
Florida and the United Kingdom have colder climates.
b)
Florida and the United Kingdom have dryer climates.
c)
Florida and the United Kingdom have warmer climates compared to locations at the same latitude.
d)
None of the above
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