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WorksheetsCurrents & Climate
Total questions: 42
Worksheet time: 25mins
Name
Class
Date
1.
Surface currents are caused by
a)
Floods
b)
Warm water
c)
Salty water
d)
Wind
2.
The density of ocean water increases when it
a)
joins the Gulf Stream.
b)
gets colder.
c)
gets warmer.
d)
turns to ice
3.
Which process increases the salinity of ocean water?
a)
The Coriolis Effect
b)
Convection currents
c)
Evaporation
d)
Continental deflection
4.
As water gets denser, how does it move?
a)
expands toward warmer water
b)
sinks toward the ocean floor
c)
gets pushed toward the poles
d)
gets pulled up by evaporation
5.
Which currents carry warm water away from the equator?
a)
Deep currents
b)
Surface currents
c)
Evaporation currents
d)
Freezing currents
6.
In which direction do global winds blow ocean currents near the equator?
a)
from east to west
b)
from west to east
c)
from north to south
d)
from south to north
7.
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.
8.
Surface ocean currents such as Gulf Stream
a)
move warm water from higher latitudes to lower latitudes.
b)
transport many times more water than all the rivers in the world.
c)
are formed in parts of the ocean where water density is great.
d)
move in straight paths across the oceans.
9.
Which of the following causes water from deep currents to rise to the surface to replace warm currents?
a)
the flow of warm currents from the equator toward the poles
b)
freezing of the surface of the water
c)
increased salinity due to evaporation
d)
squeezing solids out of the ice down into the water below
10.
How do warm-water currents affect the coastal areas along which they flow?
a)
They create greater rainfall along the coast
b)
They create unusually cool climates for the latitude.
c)
They create unusually warm climates for the latitude.
d)
They make the coastal climate cooler than the inland climate.
11.
How do changes in the circulation of ocean currents affect climate?
a)
by changing the atmosphere
b)
by moving water clockwise
c)
by increasing salinity
d)
by changing the density
12.
How does the Coriolis effect make ocean currents appear to move?
a)
up and down
b)
in a curved path
c)
toward the land
d)
back and forth
13.
What happens to an ocean current when it hits a continent?
a)
it changes direction
b)
it moves toward the poles
c)
it moves toward the equator
d)
it speeds up
14.
How are deep currents different from surface currents?
a)
They are warmer and faster.
b)
They are caused by winds.
c)
They are denser and slower.
d)
They are warmer and denser
15.
What happens to the water that is left behind after evaporation?
a)
It gets hotter
b)
It gets less densde
c)
It moves faster
d)
Its salinity increases
16.
What force makes cold water sink toward the ocean floor?
a)
global winds
b)
the Sun
c)
gravity
d)
the Coriolis Effect
17.
If ocean currents have changed their circulation patterns, you can conclude that
a)
patterns of wind circulation have also changed.
b)
the water is colder and denser than usual.
c)
the rate of evaporation has increased.
d)
the climate will be milder than usual.
18.
What happens because El Niño damages a coral reef?
a)
The ocean water gets warmer.
b)
Fish that depend on the reef die.
c)
The ocean water gets cooler.
d)
The reef supports more diversity of life.
19.
What causes a gyre to curve as it flows away from the equator?
a)
Evaporation
b)
Salinity
c)
The Coriolis Effect
d)
All of the above
20.
In what direction do gyres move in the northern hemisphere?
a)
Counterclockwise
b)
From south to north
c)
Clockwise
d)
From north to south
21.
What causes surface ocean currents?
a)
Temperature and salinity
b)
Wind and rain
c)
Temperature and the Coriolis Effect
d)
Temperature and wind
22.
Which of the following does NOT affect the density of seawater?
a)
Salinity
b)
Temperature
c)
Evaporation
d)
waves
23.
If your latitude is close to 90 degrees North, you live in which zone?
a)
Polar Zone
b)
Temperate zone
c)
Tropical zone
d)
End zone
24.
El Nino occurs when the tropical ocean waters are warmer in which ocean?
a)
Atlantic
b)
Indian
c)
Pacific
d)
Arctic
25.
What is the name of a climate event that occurs every two to seven years in the Pacific Ocean.
a)
La Nina
b)
El Nina
c)
La Nino
d)
El Nino
26.
What is the name of the largest and most powerful surface current in the North Atlantic Ocean?
a)
Gulf of Mexico
b)
Pacific Steam
c)
Gulf Stream
d)
Atlantic Ocean steam
27.
Temperature affects this greatly
a)
color
b)
density
c)
chlorine
d)
thermocline
28.
Surface currents are a result of
a)
Global Wind Patterns
b)
Earth's Rotation
c)
Density
d)
All of the above
29.
Deep Ocean currents are a result of
a)
Global Wind Patterns
b)
Earth's Rotation
c)
Density
d)
All of the above
30.
The Coriolis Effect is caused by
a)
Earth rotating around the sun
b)
Earth rotating on its axis
c)
The tides
d)
Gravity
31.
As you go deeper in the ocean, the water is colder and less salty.
a)
True
b)
False
32.
What happens to a current when it comes in contact with a continent or landmass?
a)
It continues over the continent
b)
It stops
c)
It changes direction
d)
It is absorbed by the land
33.
What type of water is traveling through the currents on the western side of a gyre?
a)
warm water from the poles
b)
warm water from the equator
c)
cold water from the poles
d)
cold water from the equator
34.
What is the large circular paths of the surface currents in each ocean basin?
a)
Coriolis Effect
b)
Ekman spiral
c)
Gyre
d)
Thermohaline Circulation
35.
What is the tendency of fluids to deflect (bend) either to the right or left rather than traveling in a straight path as Earth spins on its axis?
a)
Coriolis Effect
b)
Ekman spiral
c)
Gyre
d)
Thermohaline circulation
36.
What factors affect surface currents?
a)
Global winds, Tides
b)
Continental deflection, Gravitational pull from moon
c)
Global winds, Coriolis effect, continental deflection
d)
Tides, gravity from sun, Global winds
37.
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
38.
Streamlike movements of water at or near the surface of the ocean are called ____.
a)
Deep Ocean Currents
b)
Jet Stream Currents
c)
Surface Currents
d)
Convection Currents
39.
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.
40.
What does the Coriolis effect have on surface currents in the northern and southern hemispheres?
a)
in general, there is no real effect
b)
in general, surface currents will flow counterclockwise in the northern hemisphere and clockwise in the southern hemisphere.
c)
in general, surface currents will flow clockwise in the northern hemisphere and counterclockwise in the southern hemisphere.
d)
in general, they flow in the same direction
41.
Explain the role of density in the movement of deep currents.
a)
Cold, high salinity deep current water is less dense than warm, low salinity surface current water. As warm water sinks, cold water will move in to take its place, creating a circular movement called a convection current.
b)
Cold, high salinity deep current water is more dense than warm, low salinity surface current water. As warm water rises, cold water will move in to take its place, creating a circular movement called a convection current.
42.
The amount of matter in a given space is called ___.
a)
volume
b)
mass
c)
desity
d)
pressure
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