Week 8 Weekly Assignment Ice Glaciers Wind Deserts and Climate Change
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Durham Technical Community College *
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Course
230
Subject
Geography
Date
Dec 6, 2023
Type
Pages
6
Uploaded by AmbassadorComputerHorse22
Name____Mercedes Garcia_______________________(20 pts)
Week 8 Weekly
Assignment
CHAPTER 9:
Ice and Glaciers, Wind and Deserts
Key Terms
abla$on
abrasion
alpine glacier
calving
con$nental glacier
defla$on
desert
deser$fica$on
dri4
dune
equilibrium line
glacier
loess
moraine
outwash
rain shadow
rock flour
slip face
stria$ons
$ll
ven$fact
Mul,ple Choice
1.
The Antarc$c ice sheet is an example of a/an ___________(0.5 pt)
a.
alpine glacier.
b.
mountain glacier.
c.
con$nental glacier.
d.
valley glacier.
2.
The landform that marks the farthest advance of a glacier is called ____________(0.5 pt)
a.
an end moraine.
b.
a terminal moraine.
c.
a dri4 moraine.
d.
a boundary moraine.
3.
Winds originate mainly in response to _____________(0.5 pt)
a.
pressure differences in the atmosphere.
b.
the earth’s rota$on.
c.
the evapora$on of the world's oceans.
d.
alterna$ng periods of day and night.
4.
Ven$facts are formed by near-surface_______________(0.5 pt)
a.
defla$on.
b.
abla$on.
c.
abrasion.
d.
dri4.
5.
Which of the following condi$ons did not contribute to the Dust Bowl of the 1930s? (0.5 pt)
a.
overgrazing by livestock
b.
drought
c.
removal of na$ve vegeta$on
d.
change in direc$on of the prevailing wind
6.
The loess that covers parts of the central United States ____________(0.5 pt)
a.
was deposited by glacial melt water.
b.
was deposited during the Dust Bowl era.
c.
is an accumula$on of windblown silt from the na$on’s desert areas.
d.
is of volcanic origin.
7.
Evidence indicates that ________________(0.5 pt)
a.
the earth has experienced a single Ice Age that ended about 10,000 years ago.
b.
ice ages are rela$vely recent events in earth's history.
c.
there have been at least six ice ages going back a billion years or more.
d.
the first Ice Age began with the breakup of Pangaea about 200 million years ago.
Fill In the Blanks
8.
A
_glacier____________
is a mass of ice formed from compacted, recrystallized snow that moves over land
under its own weight. (0.5 pt)
9.
__Till__________________
is sediment deposited by mel$ng glacial ice. (0.5 pt)
10.
A
___moraine____________
is a landform made of $ll. (0.5 pt)
11.
Wind
____abrasion_________
is a type of natural sandblas$ng in which wind-transported sediments strike an
object and wear it away. (0.5 pt)
12.
A
____dune___________
is a low mound or ridge of fine-grained material (usually sand) deposited by the
wind. (0.5 pt)
13.
__loess_____________
is a deposit of windblown silt. (0.5 pt)
14.
A
__rain shadow___________
is an area of low rainfall on the leeward side of a mountain range that is
caused by loss of moisture from air passing over the mountains. (0.5 pt)
15.
__deser$fica$on____________
is the conversion of habitable arid lands to uninhabitable desert as a result of
land-use prac$ces such as farming and grazing of livestock. (0.5 pt)
True or False
Indicate whether the following statements are true or false.
If false, correct the statement to make it true.
16.
____F________Most
of the glaciers in the world today are con$nental glaciers. (0.5 pt)
17.
____T________Approximately
75% of the earth’s fresh water is stored as glacial ice. (0.5 pt)
18.
______F________The
equilibrium line on a glacial surface indicates the line of farthest glacial advance. (0.5 pt)
19.
____F__________A
valley carved by a glacier is typically V-shaped. (0.5 pt)
20.
_____T___________Many
of the world’s major deserts occur in belts close to 30 degrees north and south of the
equator. (0.5 pt)
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CHAPTER 10
CLIMATE – PAST, PRESE
N
T, A
N
D FUTURE
Key Terms
Mul,ple Choice
21.
Which of the following is an example of nega$ve feedback to global warming:
(0.5 pt)
a.
polar ice melt decreases surface albedo thus further increasing warming;
b.
increased cloud cover due to increased water evapora$on brought about by global warming results in a
decrease in global temperature;
c.
glacial retreat caused by global warming reduces surface albedo thereby increasing warming;
d.
warming increases sea temperature thus causing more carbon dioxide to be released into the atmosphere by
oceans thereby increasing warming.
22.
Of the following gases, the one that is a greenhouse gas:
(0.5 pt)
a.
oxygen
Atlan$c Mul$decadal Oscilla$on (AMO)
Carbon dioxide
Climate
Climate change
Climate feedback mechanisms
El Nino
Global climate
Greenhouse effect
Greenhouse gases
La Nina
Methane
Pacific Decadal Oscilla$on (PDO)
Permafrost
Thermohaline circula$on
Water vapor
b.
carbon dioxide
c.
nitrogen
d.
argon
23.
Sea level rise resul$ng from global warming occurs because sea water expands and ____________
(0.5 pt)
a.
winds become stronger
b.
ice caps and glaciers melt
c.
less water is needed by plants
d.
all of these factors
24.
Effects of recent warming have resulted in all of the following except___________
(0.5 pt)
a.
mel$ng of permafrost
b.
glacial retreat
c.
mel$ng of the polar ice caps
d.
decreasing sea level
25.
Greenhouse gases________________
(0.5 pt)
a.
trap heat in the atmosphere that radiates from Earth’s surface
b.
maintain Earth’s average temperature at a comfortable 15
o
C
c.
include carbon dioxide and water vapor
d.
all of these
26.
The most significant greenhouse gas is___________
(0.5 pt)
a.
water vapor
b.
carbon dioxide
c.
methane
d.
chlorofluorocarbons (CFCs).
Fill in the Blanks
27.
Earth’s surface is warmed by the sun when
__sunlight_____________
is absorbed and changed to heat.
(0.5
pt)
28.
As ice melts, Earth’s surface
__albedo__________
decreases causing further warming.
(0.5 pt)
29.
_carbon dioxide_______________
is a greenhouse gas that is necessary to the process of photosynthesis in
plants.
(0.5 pt)
30.
___thermohaline circula$on_____________
is driven by differences in the density of seawater that varies with
temperature and salinity.
(0.5 pt)
31.
Presently, signs of warming are more significant in the northern hemisphere in comparison to the southern
hemisphere.
This paradox can be explained on the basis of changes in
__thermohaline; ocean_____________
currents.
(0.5 pt)
32.
A substan$ally bejer understanding of past global climate change has resulted from the study of
___ice
cores________________
obtained from Greenland and Antarc$ca.
(0.5 pt)
33.
Earth’s average temperature is ____
15 degress celsius_________
_____ .
(0.5 pt)
True or False
34.
T
F
Thermohaline ocean currents are controlled by temperature and wind.
35.
T
F
If sea level rises due to global warming, rivers emptying into the sea will experience more
frequent flooding.
36.
T
F
Methane represents the largest amount of greenhouse gas in the atmosphere.
37.
T
F
Water vapor is a greenhouse gas.
38.
T
F
Without greenhouse gases in the atmosphere, life on Earth would not be possible.
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