Module 14 Deserts Tour via Google Earth Lab_Quiz_ (Fall 2023) GOL 105 (E81A) - Physical Geology
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Northern Virginia Community College *
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Course
105
Subject
Geology
Date
Jan 9, 2024
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12
Uploaded by natebalcha
12/6/23, 8:59 PM
Module 14 Deserts Tour via Google Earth Lab/Quiz: (Fall 2023) GOL 105 (E81A) - Physical Geology
https://learn.vccs.edu/courses/561798/quizzes/4264189
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Some questions not yet graded
Module 14 Deserts Tour via Google Earth Lab/Quiz
Due
Dec 6 at 11:59pm
Points
100
Questions
19
Available
Oct 18 at 12am - Dec 6 at 11:59pm
Time Limit
None
Allowed Attempts
3
Instructions
Attempt History
Attempt
Time
Score
LATEST
Attempt 1
9 minutes
65 out of 100 *
Module 14 Deserts Tour via Google Earth Lab/Quiz
Purpose
The purpose of completing this lab assignment is to reinforce the concepts presented in this unit.
Directions
Download Google Earth, if you don't already have it on your computer.
Download the .KMZ Google Earth file:
Deserts and Winds.
kmz
(https://learn.vccs.edu/courses/561798/files/147273850/download?wrap=1)
(https://learn.vccs.edu/courses/561798/files/147273850/download?download_frd=1)
Browse through Google Earth tour as you complete the questions.
You have the ability to go back and change your answers before submitting the assignment.
There is no time limit, but you cannot save and return later to finish. You must finish each attempt in
one sitting.
You have 3 attempts to complete the assignment. The highest grade will be saved in Grades for this
assignment.
Grading
Your assignment will be graded according to how many answers you get correct. There are
95
possible
points.
Take the Quiz Again
12/6/23, 8:59 PM
Module 14 Deserts Tour via Google Earth Lab/Quiz: (Fall 2023) GOL 105 (E81A) - Physical Geology
https://learn.vccs.edu/courses/561798/quizzes/4264189
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Answers will be shown after your last attempt
Score for this attempt:
65
out of 100 *
Submitted Dec 6 at 8:57pm
This attempt took 9 minutes.
5 / 5 pts
Question 1
1) In textbook section 19.1, you learned that there are multiple reasons for
land to be dry. Examine the first stop on the Google Earth tour, the
Patagonian desert, and assess which of the following causes is likely to
the the reason that southern Argentina is so dry.
This is a subtropical desert near the Tropic of Cancer, where descending
dry air precludes rainfall.
This is a subtropical desert near the Tropic of Capricorn, where descending
dry air precludes rainfall.
This is a rainshadow desert, where moist air from the Atlantic moves
westward, and has all the moisture extracted by coastal cities such as
Buenos Aires.
This is a rainshadow desert, where moist air from the Pacific moves
eastward, and has all the moisture extracted by the coastal mountain
ranges of the Andes.
This is a west coast subtropical desert, caused by cold upwelling ocean
currents (air chilled by contact with these cold waters is more dense and
thus resists rising and triggering precipitation).
12/6/23, 8:59 PM
Module 14 Deserts Tour via Google Earth Lab/Quiz: (Fall 2023) GOL 105 (E81A) - Physical Geology
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5 / 5 pts
Question 2
2) Same sort of question as #1: It's time to assess another desert and
determine its reason for existing. Examine the second stop on the Google
Earth tour, the Sahara desert, and assess which of the following causes is
likely to the the reason that northern Africa and the Arabian Peninsula are
so dry.
This is a subtropical desert near the Tropic of Cancer, where descending
dry air precludes rainfall.
This is a subtropical desert near the Tropic of Capricorn, where descending
dry air precludes rainfall.
This is a rainshadow desert, where moist air from the Atlantic moves
westward, and has all the moisture extracted by coastal cities such as
Buenos Aires.
This is a rainshadow desert, where moist air from the Pacific moves
eastward, and has all the moisture extracted by the coastal mountain
ranges of the Andes.
This is a west coast subtropical desert, caused by cold upwelling ocean
currents (air chilled by contact with these cold waters is more dense and
thus resists rising and triggering precipitation).
0 / 5 pts
Question 3
Incorrect
Incorrect
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12/6/23, 8:59 PM
Module 14 Deserts Tour via Google Earth Lab/Quiz: (Fall 2023) GOL 105 (E81A) - Physical Geology
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3) Click the next stop on the tour - "Badwater, Death Valley." Hover your
cursor over various points in the area, and find the lowest elevation.
Elevation at the point of the cursor is shown in the data bar on the bottom
of the Google Earth screen, toward the right side. What is the elevation of
Badwater? Express your answer in feet.
About 2270 feet above sea level
About 270 feet above sea level
0 (sea level, exactly)
About 270 feet below sea level
About 2270 feet below sea level
5 / 5 pts
Question 4
4) Examine Landform "A" (three examples are provided in Death Valley,
each outlined in yellow). What landform is this?
delta
alluvial fan
bajada
yardang
inselberg
5 / 5 pts
Question 5
12/6/23, 8:59 PM
Module 14 Deserts Tour via Google Earth Lab/Quiz: (Fall 2023) GOL 105 (E81A) - Physical Geology
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5) Examine Landform "B" (it is outlined in orange). What landform is this?
delta
alluvial fan
bajada
yardang
inselberg
0 / 5 pts
Question 6
Incorrect
Incorrect
6) Considering that the mountains flanking Death Valley to the east and
west are about the same size as each other, how to you explain the
difference in landforms (your answers to the previous two questions) on
either side of Death Valley?
There must be less sedimentation happening in eastern Death Valley than
in the west.
The east side of Death Valley must be dropping (subsiding) more rapidly
than the west side.
The west side of Death Valley must be dropping (subsiding) more rapidly
than the east side.
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Module 14 Deserts Tour via Google Earth Lab/Quiz: (Fall 2023) GOL 105 (E81A) - Physical Geology
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The mountains to the west of Death Valley get more precipitation than the
mountains to the east of Death Valley, resulting in more weathering of the
bedrock, and therefore more sediment production.
0 / 5 pts
Question 7
Incorrect
Incorrect
7) Examine the next two stops on the Google Earth tour: The "barchan
dunes" and the "parabolic dunes" in White Sands National Monument, in
New Mexico. Which way is the wind blowing in this region?
east to west
west to east
north to south
south to north
5 / 5 pts
Question 8
8) Measure the distance between the two placemarks for "barchan dunes"
and "parabolic dunes" in the White Sands National Monument region.
(The measurement tool in Google Earth is at the top - it looks like a small
ruler icon.) How far apart are they?
20 feet
2 miles
20 miles
200 miles
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0 / 5 pts
Question 9
Incorrect
Incorrect
9) Considering this distance (
i.e.
, your answer to #8 above), what variable
is most likely responsible for the change in dune type over such a short
distance?
sediment supply increasing to the east
sediment supply decreasing to the east
change in wind direction
more moisture, and therefore more vegetation to the east
5 / 5 pts
Question 10
10) Enter the GigaPan that's the next item on the Google Earth tour.
Explore it - it's full resolution. What's the name given to the flat white
landform on the right side of the image?
alluvial fan
inselberg
playa
yardang
star dune
12/6/23, 8:59 PM
Module 14 Deserts Tour via Google Earth Lab/Quiz: (Fall 2023) GOL 105 (E81A) - Physical Geology
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5 / 5 pts
Question 11
11) Compare the two alluvial fans outlined in purple in the northern Owens
Valley (11A and 11B). They are different colors. Why?
One is an alluvial fan; the other is a delta.
One is made of dark-colored sediment derived from dark-colored source
rocks; the other is dominated by light-colored sediment derived from light-
colored source rocks.
One is colonized by people; the other one is pristine.
One was deposited by wind; the other deposited by water.
5 / 5 pts
Question 12
12 part I) Explore the GigaPan at site 12 (Zion Canyon, Utah) and identify
the sedimentary structures in the cliffs at the right. The sedimentary
structures seen there are ____________.
graded beds
cross beds
ripple marks
mudcracks
5 / 5 pts
Question 13
12/6/23, 8:59 PM
Module 14 Deserts Tour via Google Earth Lab/Quiz: (Fall 2023) GOL 105 (E81A) - Physical Geology
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12 part II) Examine each of the placemarks following the sedimentary
structure GigaPan. Which of these four settings is most likely the sort of
environment where the sedimentary structure you identified in the
previous question would have formed?
A) a river flowing into the sea
B) a delta distributary
C) a glacial moraine
D) a field of sand dunes
5 / 5 pts
Question 14
13) What kind of dune is seen at the next stop on the tour?
barchan
barchanoid
transverse
longitudinal
parabolic
star
5 / 5 pts
Question 15
14) Examine Landform "C" (outlined in yellow). What landform is this?
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12/6/23, 8:59 PM
Module 14 Deserts Tour via Google Earth Lab/Quiz: (Fall 2023) GOL 105 (E81A) - Physical Geology
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delta
alluvial fan
bajada
yardang
inselberg
5 / 5 pts
Question 16
15) Compare and contrast the tectonics of the Zagros Mountains of Iran
and the Basin and Range province of Utah. Representative samples of
the landscape of both sites are outlined in blue as the next two stops on
the tour. How did they form?
Both the Zagros Mountains and the Basin & Range are compressional, as
indicated by anticlines and synclines at each site.
Both the Zagros Mountains and the Basin & Range are extensional, as
indicated by fault-block mountains at each site.
The Zagros Mountains are compressional, as indicated by anticlines and
synclines. The Basin & Range, on the other hand, is caused by extensional
tectonics, as indicated by the fault-block mountains there.
The Zagros Mountains are caused by extensional tectonics, as indicated
by the fault-block mountains there. The Basin & Range, on the other hand,
is compressional, as indicated by anticlines and synclines.
5 / 5 pts
Question 17
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16) Examine the Aral Sea using the "history" slider at the top. Click the
icon/button that looks like a clock with an arrow draped over it. Slide the
bar all the way to the left, and then to various positions in time, going to
the right. What happens to the size of the Aral Sea over the past 40
years?
It stays about the same size.
It gets much smaller.
It gets much larger.
It grows and shrinks, grows and shrinks, on a regular basis, expanding and
contracting every ten years or so.
0 / 5 pts
Question 18
Incorrect
Incorrect
17) Visit the Dead Sea next. This is the last stop on our Desert Tour. What
is the elevation of the Dead Sea?
1363 feet above sea level.
13.63 feet above sea level.
13.63 feet below sea level.
1363 feet below sea level.
Not yet graded / 10 pts
Question 19
Unanswered
Unanswered
12/6/23, 8:59 PM
Module 14 Deserts Tour via Google Earth Lab/Quiz: (Fall 2023) GOL 105 (E81A) - Physical Geology
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18) Explore the world's deserts on your own in Google Earth now. Identify
a feature, landscape, structure, or scene that you learned to recognize
from this lab. Do not pick one of the sites we have already visited, but DO
pick a similar phenomenon at a new site. Take a screen shot of the site
and save it to your computer as an image. Feel free to add any
explanatory annotations to highlight the feature you're focusing on.
Rename that image with the name of the feature (e.g. "inselberg" or "fault
block mountains") and upload it here as your "answer" to this question. 5
points for uploading the image; 5 points for identifying it correctly.
Quiz Score:
65
out of 100
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