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WorksheetsHeat and Ocean Currents
Total questions: 21
Worksheet time: 11mins
Name
Class
Date
1.
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
2.
Which of the following is not true about gyres?
a)
A gyre refers to the large circular motion of ocean water in an ocean basin.
b)
A gyre is made up of four separate surface currents.
c)
In the Southern Hemisphere, gyres circulate clockwise.
d)
In the Northern Hemisphere, gyres circulate clockwise.
3.
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
4.
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.
5.
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
6.
What happens when an ocean current meets a land mass?
a)
the water heats up
b)
the current is deflected
c)
a tidal bore forms
d)
an undertow recedes from the shoreline
7.
If a cool surface current flows along a coastline, what effect might it have on the climate in that area?
a)
In general, it will bring warmer temperatures in the summer and milder temperatures in the winters
b)
In general, it will bring cooler temperatures in the summer and milder temperatures in the winters
c)
In general, it will have no long term effect on climate in that area.
d)
In general, it will bring cooler temperatures in the summer and colder temperatures in the winters
8.
Where on Earth does the Sun's energy heat up the ocean water the LEAST?
a)
at the Poles
b)
at the equator
c)
near the continents
d)
the Sun's energy heats up ocean water the same all around the Earth
9.
Due to the prevailing westerlies wind belt and the jet stream, weather in the middle latitudes (30o-60o) of the Northern Hemisphere blows ---- to ----- .
a)
north; south
b)
east; west
c)
west; east
d)
south; north
10.
What is the initial source for global winds and convection in the atmosphere?
a)
Unequal heating of the Earth by the sun.
b)
The rotation of the Earth
c)
Moon's gravity
d)
continental deflection
11.
Which term below best describes how heat is transferred through the oceans?
a)
convection
b)
conduction
c)
radiation
12.
Which statement best describes how Earth's oceans transfer heat around the globe?
a)
the transfer of heat energy across open space
b)
the transfer of heat energy by movement of water or air in a circular motion
c)
the transfer of heat energy by direct contact
13.
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
14.
The global movement of air occurs in convection cells. In general, how does air move?
a)
from areas of higher pressure to areas of lower pressure
b)
From areas of lower pressure to areas of higher pressure
c)
from areas of higher temperature to areas of lower temperature
d)
from areas of lower temperature to areas of higher temperature
15.
Regional climates are classified according to which two major factors?
a)
elevation and precipitation
b)
latitude and temperature
c)
elevation and latitude
d)
precipitation and temperature.
16.
How do boundary currents influence climate?
a)
Cold currents result in cooler air temperatures, which speed up the rates of evaporation.
b)
Cold currents result in warmer air temperatures, which speed up the rates of evaporation.
c)
Warm currents result in cooler air temperatures, which slow down the rates of evaporation.
d)
Warm currents result in warmer air temperatures, which speed up the rates of evaporation.
17.
Which diagram represents an El Niño event?
a)
Diagram A
b)
Diagram B
c)
Diagram C
18.
All of the following are indicators of an El Niño event except
a)
Air pressure in the eastern tropical Pacific drops, causing the Trade Winds to weaken.
b)
Warmer than normal surface water slowly makes its way to the west, towards Australia.
c)
Commercial fishing production off the coast of Peru drops off significantly.
d)
Warmer than normal surface water is found off the coast of Peru.
19.
Which of the following statements is not supported by what we learned about surface currents?
a)
Surface currents only affect water to a depth of about 400 meters.
b)
Surface currents only occur in the Pacific Ocean.
c)
Surface currents are driven mainly by winds.
d)
Surface currents move in circular patterns called gyres.
20.
This graph represents the climate of a city near an ocean current. How would the climate of a city that is "landlocked" compare to the data provided?
a)
Since water and air heat more slowly than land, the landlocked city climate data would show a greater temperature change throughout the year.
b)
Since water and air heat more slowly than land, the landlocked city climate data would show a smaller temperature change throughout the year.
c)
Since water and air heat faster than land, the landlocked city climate data would show a greater temperature change throughout the year.
d)
Since water and air heat faster than land, the landlocked city climate data would show a smaller temperature change throughout the year.
21.
Which city is most likely next to a cold ocean current?
a)
City A
b)
City B
c)
City C
d)
City D
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