Unit 2 Building Topography_ Lab Practical on Orders of Relief (2.5 points)
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Arizona State University *
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Course
111
Subject
Geography
Date
Feb 20, 2024
Type
Pages
7
Uploaded by toppingdog0964
Score for this quiz:
1.5
out of 2.5
Submitted Feb 9 at 12:01pm
This attempt took 6 minutes.
Question 1
0.5 / 0.5 pts
In Google Eaerth go to (-27.667354°, 132.967490°) and then change the eye altitude to
2600 miles about Earth’s surface. What is the order of relief and the major process(es)
generating that relief? Also, what is the total relief from the highest point (Mount
Kusciusko at -36.456076°, 148.263240°) and the adjacent continental shelf (at this spot
near the end of the shelf -39.434483°, 148.616194°)?
This is a 2nd order feature. It is produced by a mix of plate tectonic processes and
erosion. The relief from highest location to the edge of the continental shelf is about
7600 feet.
This is a 2nd order feature. It is produced by mostly volcanic processes. The relief from
highest location to the edge of the continental shelf is about 7285 feet.
Correct!
This is a 1
st
order feature. It is produced by plate tectonic processes. The relief from
highest location to the edge of the continental shelf is about 7600 feet.
This is a 1
st
order feature. It is produced by mostly volcanic processes. The relief from
highest location to the edge of the continental shelf is about 7285 feet.
Australia is a 1st order feature, because it is a continent. The elevation of
Mount Kusciusko is 7285 feet as portrayed in Google Earth. The elevation of
the indicated spot on the edge of the continent shelf (-39.434483°,
148.616194°) is about -300 feet. Thus, the total relief is rounded off to about
7600 feet. Plate tectonic processes generated the basic continent of Australia.
The reason why this continent has so little relief is because it was part of the
supercontinent of Gondwana. While New Zealand is on the margin of tectonic
plates, Australia is in the middle. Thus, little relief-building has taken place. This
has allowed erosion to reduce the relief of Australia.
Question 2
0.5 / 0.5 pts
Go to El Capitan in Yosemite via Google Earth (37.722298°, -119.639469°) and change
the eye altitude to about 24000 feet above the surface. What is the order of relief that
you are seeing from
near the top of El Capitan
Links to an external site.
and what would be the major process(es) generating the observed relief. Also, what is
the total relief from the Merced River (37.722298°, -119.639469°) to the top of El
Capitan (37.733473°, -119.637854°)?
3
rd
order of relief generated by first volcanic activity the initial relief of El Capitan, and
then glacial erosion carving Yosemite Valley. The resulting relief is about 3600 feet
3
rd
order of relief generated by first faulting generating the initial relief of El Capitan,
and then glacial erosion carving Yosemite Valley. The resulting relief is about 3600 feet
Correct!
3
rd
order of relief generated by weathering, mass wasting, deposition of glacial and
river sediment, and glacial erosion. The resulting relief is about 3600 feet
3
rd
order of relief generated by first faulting generating the initial relief of El Capitan,
and then a mix of rock slides and glacial erosion. The resulting relief is about 7550 feet
The relief between the top of El Capitan (37.733473°, -119.637854°) and the
Merced River (37.722298°, -119.639469°) is 7550-3959 or about 3600 feet.
This relief results from a combination of rock decay (weathering), rock slides
(mass wasting), deposition filling Yosemite Valley, and likely also some glacial
erosion beneath El Capitan.
Question 3
0 / 0.5 pts
In Google Earth go to Mount Everest (27.987332°, 86.895156°) and change the eye
altitude to about 13 miles above the surface. What is the order of relief that you are
seeing and what would be the major process(es) generating the observed relief. Also,
what is the total relief from the high point of Mt Everest (27.987850°, 86.925026°) and
the Base Camp at (28.0013008,86.8510439).
YOU DO NOT HAVE TO DO THIS … But if you want to get a better view of things,
rotate the North Arrow (N circle in upper right corner) so that the N faces to the left. This
gives you an east-facing view. Then, find the “eyeball” tool and rotate the whole image
so that the view is what you would see out of an airplane. If you have not done this, it
will take practice.
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2
nd
order of relief generated by plate tectonic collision between Asia and Indian
tectonic plates, producing about 11,700 feet of relief between summit and base camp.
1st order of relief generated by plate tectonic collision between Asia and Indian
tectonic plates, producing about 29,029 feet of relief.
You Answered
1
st
order of relief generated plate tectonic collision between Asia and Indian tectonic
plates, producing about 11,700 feet of relief between summit and base camp.
Correct Answer
3
nd
order of relief generated by glacial erosion and avalanches producing about 11,700
feet of relief between summit and base camp.
From the
top of Mount Everest
Links to an external site.
a lot of 3rd order landforms. However, the relief between Base Camp (28.0013008,
86.8510439) at about 17,360 ft and the summit is approximately 11,700 feet of relief. This relief
is a product of glacial erosion and avalanching. Frost weathering certainly plays a role in
breaking apart the rocks too. While plate tectonic collision between the Indian and Asian plates
continue to uplift Mt Everest, the relief seen between mountain top and base camp is a result of
rock decay (weathering) and erosional processes – making this a 3rd order feature.
Question 4
0.5 / 0.5 pts
In Google Earth go to (-20.630858°,-68.027766°) and the change the eye altitude to 1000
miles above the surface. What is the order of relief of what you are seeing and what
would be the major process(es) generating that relief. Also, what is the total relief from
the highest peak (Aconcagua – you will have to search for it) as measured in Google
Earth – compared to the elevation of the Peru-Chile trench at this location
(-21.387125°,-71.344201°)?
1
st
order of relief generated by plate tectonic collision with about 22,736 feet of relief.
Correct!
2
nd
order of relief generated by plate tectonic collision with about 42,000 feet of relief
2
nd
order of relief generated by a mix of thrust faulting and glacial erosion with about
22,736 feet of relief
3
rd
order of relief created by mostly glacial erosion generating about 23,000 feet of
relief
The indicated Google Earth view does not portray a continent or full ocean
basin, and thus it is not a 1
st
order of relief. Google Earth from about 1000
miles above the surface shows effects of plate tectonic collision where the
Nasca plate subducts under the American Plate. This subduction generates the
Peru-Chile trench which (at -21.387125°,-71.344201°) is about -19,000 feet
(below sea level). When combined with the height of Aconcagua
(
http://earthobservatory.nasa.gov/IOTD/view.php?id=88271
Links to an external site.
) above sea level (22,730 on Google Earth and 22,736 as measured), the total
relief is rounded off to about 42,000 feet.
Question 5
0 / 0.5 pts
In Google Earth go to (27.987850°, 86.925026°) and change the eye altitude to about
2000 miles above Earth’s surface. What order of relief are you seeing and what would be
the major process(es) generating that relief. Also, what is the total relief from the
highest point (27.987850°, 86.925026°) in the Himalaya Range to the Ganges Plain
(25.311755°, 87.627053°)?
2
nd
order of relief generated by volcanic activity with exactly 29,029 feet of relief.
3
rd
order or relief generated by glacial erosion with exactly 29,029 feet of relief.
Correct Answer
2
nd
order of relief generated relief of about 29,000 feet from a mix of plate tectonic
collision and glacial erosion.
You Answered
1
st
order of relief generated by plate tectonic collision of India and Asia with exactly
29,029 feet of relief.
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The Himalaya Range and the adjacent Ganges River Plain form a 2nd order relief feature. It
cannot be seen in one view, but it is not continent in scale. It formed as a result of the collision
of two continental plates (India, Asia), and also glacial erosion. On Google Earth, the highest
elevation you can find for Sagarmatha (or Mount Everest) is about 28,993, instead of the
measured 29,029. The Ganges Plain rests mostly about 100 feet above Sea level, so the relief
is appropriately rounded off to 29,000.