Unit 3 Sculpting Earth's Topography_ Lab Practical on Weathering Forms (2 points)_ GPH 111_ Intro to
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Apr 3, 2024
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2/24/24, 7:44 PM
Unit 3 Sculpting Earth's Topography: Lab Practical on Weathering Forms (2 points): GPH 111: Intro to Physical Geography (2…
https://canvas.asu.edu/courses/172892/quizzes/1298474
1/5
Unit 3 Sculpting Earth's Topography: Lab Practical on Weathering
Forms (2 points) Due No due date
Points 2
Questions 4
Time Limit None
Instructions
Attempt History
Attempt
Time
Score
LATEST
Attempt 1
11 minutes
2 out of 2
Score for this quiz: 2 out of 2
Submitted Feb 24 at 7:44pm
This attempt took 11 minutes.
Question 1
0.5 / 0.5 pts
Correct!
Tthe decay of granitic rocks generates weathering landscapes that many find beautiful. However, a lot of the processes happen underneath the surface. These processes "set the table" for
the landscape to come. This road cut seen in Google Street Views
(https://www.google.com/maps/@38.9768497,-120.1017967,3a,75y,0.05h,79.08t/data=!3m6!1e1!3m4!1s6c1wLL0G4-
1fSpYm3BpHQg!2e0!7i13312!8i6656) near Bliss State Park in California shows a great example of how solid granitic rock decays to very different particle sizes. Sand-sized particles and
giant boulders called _________________ are all made by subsurface rock decay. The reason why the core stones are not turned into sand is because the rock ________ are a bit further
apart and water could not penetrate into the their interior. Select the best match to fill in the blanks.
core stones; joints
Correct!
This Google Street view of a road cut
(https://www.google.com/maps/@32.4060724,-110.699935,3a,75y,36.29h,88t/data=!3m7!1e1!3m5!1sd_BIDnt1mlv6GJ9cBwNGjg!2e0!6s%2F%2Fgeo0.ggpht.com%2Fcbk%3Fpanoid%3Dd_BIDnt1mlv
on the Catalina Highway above Tucson, Arizona, shows a great example of how solid granitic rock begins to decay. Notice the fracturing pattern in the granitic rock -- of how the fractures
break up the rock into cube forms. __________ is the name given to these fractures.
joints
Correct!
In this
Google Street view
(https://www.google.com/maps/@32.3838224,-110.6941859,3a,75y,28.19h,83.02t/data=!3m6!1e1!3m4!1sLqze-AJRprxMRbaiLBpDEg!2e0!7i13312!8i6656) of the
Catalina Highway above Tucson, you can see the cube (orthogonal) jointing of the fresh granitic bedrock in the road cut. Then, you see the exact same rock type above the road cut.
However, the form looks different. You can probably still make out the original cube-shaped form that was once present in the subsurface. However, a lot of rock decay has occurred, and
the products of this rock decay have washed away during rainstorms. In fact, if you look carefully, you can see the sandy material spread all over the ground. That _________ is one of the
products of granitic decay. The other typical product are the large rounded core stones. Select the match that best fills in the blank.
In the weathering (rock decay) lectures (
processes
(http://www.asu.edu/courses/gph111/BreezeLectures/24WxProcesses/24PublishWxProcess/index.htm)
and forms
(http://www.asu.edu/courses/gph111/BreezeLectures/25WxForms/25PublishWxForms/index.htm) ), and readings
about weathering
(https://canvas.asu.edu/courses/172892/files/77690588/download?wrap=1) , you are exposed to a lot of weathering forms. This lab practical asks you to
take the next step -- of seeing if you can identify these forms and connect them to processes in the real world. Have fun with the matching questions that
mostly use Google Street views to allow you to explore a bit more than a static picture of features you can see on Earth's surface produced by rock
decay processes.
In this lab practical you match the Google Street view (or sometimes video clip) to the weathering process or form.
In the weathering (rock decay) lectures (
processes
(http://www.asu.edu/courses/gph111/BreezeLectures/24WxProcesses/24PublishWxProcess/index.htm) and forms
(http://www.asu.edu/courses/gph111/BreezeLectures/25WxForms/25PublishWxForms/index.htm) ), and readings
(http://www.earthonlinemedia.com/ebooks/tpe_3e/soil_systems/soil_development_weathering.html) about weathering, you are exposed to a lot of weathering forms. This lab practical asks
you to take the next step -- of seeing if you can identify these forms and connect them to processes in the real world. Have fun with the matching questions that mostly use Google Street
views to allow you to explore a bit more than a static picture.
2/24/24, 7:44 PM
Unit 3 Sculpting Earth's Topography: Lab Practical on Weathering Forms (2 points): GPH 111: Intro to Physical Geography (2…
https://canvas.asu.edu/courses/172892/quizzes/1298474
2/5
grus
Correct!
You have made it to the North Rim of the Grand Canyon -- a much better place to visit than the South Rim. After looking around at the wonderful view
(https://www.google.com/maps/place/Bright+Angel+Point/@36.1948219,-112.050455,3a,90y,204.08h,63.32t/data=!3m8!1e1!3m6!1s-z-
smcYAa0PU%2FVBxQUvQIa5I%2FAAAAAAAAOMY%2FlM19sIwUxuMto8jJf9rwp7uN4ftvoyF0A!2e4!3e11!6s%2F%2Flh6.googleusercontent.com%2F-z-
smcYAa0PU%2FVBxQUvQIa5I%2FAAAAAAAAOMY%2FlM19sIwUxuMto8jJf9rwp7uN4ftvoyF0A%2Fw203-h101-n-k-
no%2F!7i9728!8i4864!4m5!3m4!1s0x8733129def1c3291:0x3e2d3a52ca0364f1!8m2!3d36.1935332!4d-112.0486352!6m1!1e1) , you start to look around at your feet (
Street View looking down
(https://www.google.com/maps/place/Bright+Angel+Point/@36.1948219,-112.050455,3a,37.5y,330.57h,55.94t/data=!3m8!1e1!3m6!1s-z-
smcYAa0PU%2FVBxQUvQIa5I%2FAAAAAAAAOMY%2FlM19sIwUxuMto8jJf9rwp7uN4ftvoyF0A!2e4!3e11!6s%2F%2Flh6.googleusercontent.com%2F-z-
smcYAa0PU%2FVBxQUvQIa5I%2FAAAAAAAAOMY%2FlM19sIwUxuMto8jJf9rwp7uN4ftvoyF0A%2Fw203-h101-n-k-
no%2F!7i9728!8i4864!4m5!3m4!1s0x8733129def1c3291:0x3e2d3a52ca0364f1!8m2!3d36.1935332!4d-112.0486352!6m1!1e1) ). You notice that the white Kaibab formation is a limestone, and you
notice the tiny holes in the limestone. You remember from your physical geography class that the term for small forms made by the dissolution of limestone is called _______. Then, you
wonder why you remembered that and go to the (https://www.google.com/maps/place/Grand+Canyon+North+Rim+Lodge/@36.1970329,-112.0531486,3a,75y,303.75h,56.18t/data=!3m8!1e1!3m6!1s-H_-u9vECW8M%2FVi-
nbPG3NjI%2FAAAAAAAAANI%2FjLWm2NTkD78UD3tJX50W9TyMKNlOcBFbQ!2e4!3e11!6s%2F%2Flh4.googleusercontent.com%2F-H_-u9vECW8M%2FVi-
nbPG3NjI%2FAAAAAAAAANI%2FjLWm2NTkD78UD3tJX50W9TyMKNlOcBFbQ%2Fw203-h101-n-k-
no%2F!7i8704!8i4352!4m5!3m4!1s0x87349e44a842677d:0xaef22295648456f8!8m2!3d36.1972238!4d-112.0529428!6m1!1e1) patio to enjoy a drink
(https://www.google.com/maps/place/Grand+Canyon+North+Rim+Lodge/@36.1970329,-112.0531486,3a,75y,303.75h,56.18t/data=!3m8!1e1!3m6!1s-H_-u9vECW8M%2FVi-
nbPG3NjI%2FAAAAAAAAANI%2FjLWm2NTkD78UD3tJX50W9TyMKNlOcBFbQ!2e4!3e11!6s%2F%2Flh4.googleusercontent.com%2F-H_-u9vECW8M%2FVi-
nbPG3NjI%2FAAAAAAAAANI%2FjLWm2NTkD78UD3tJX50W9TyMKNlOcBFbQ%2Fw203-h101-n-k-
no%2F!7i8704!8i4352!4m5!3m4!1s0x87349e44a842677d:0xaef22295648456f8!8m2!3d36.1972238!4d-112.0529428!6m1!1e1) . karren
Core stones of hard granite survive the decay of granitic rocks into grus because the joint fractures are further apart. Less jointing means less water penetration. If these subsurface
boulders survive long enough ... and if erosion strips the sand away fast enough, they will rest on the surface as large boulders like these ones just to the upper right
(https://www.google.com/maps/@38.9768497,-120.1017967,3a,45y,57.33h,95.26t/data=!3m6!1e1!3m4!1s6c1wLL0G4-1fSpYm3BpHQg!2e0!7i13312!8i6656) .
The orthogonal (involving right angles) joint pattern is very typical of granite rocks. This pattern tends to end up producing cubes. The cubes round in the subsurface to spherical core
stones through processes of rock decay in the subsurface.
Granitic rocks typically decay into two very different sizes: sand composed of the break-down products of original minerals; and then larger core stones or the less decayed.interiors of the
granitic cube forms.
Looking down and seeing karren forms (in this case a small hole) made by the simple dissolution of limestone is a great way to appreciate the Grand Canyon. Start small, looking at the
smallest pieces. Then, look at single landforms like a cliff face. Then, grow your appreciation to the Temple and then the whole enchilada.
Question 2
0.5 / 0.5 pts
There are four videos or Google Streetview scenes for you to examine (when there is an or, its the same concept with just different settings)
Streetview
(https://www.google.com/maps/@21.3785757,-158.0418264,3a,15y,332.63h,94.15t/data=!3m6!1e1!3m4!1sIonm4qexDcix0Wwx2IbBMw!2e0!7i13312!8i6656!6m
of a roadcut in Hawaii
(https://www.google.com/maps/@21.3785757,-158.0418264,3a,15y,332.63h,94.15t/data=!3m6!1e1!3m4!1sIonm4qexDcix0Wwx2IbBMw!2e0!7i13312!8i6656!6m
or Streetview 2 of the surface of a soil
(https://www.google.com/maps/place/O%E2%80%98ahu/@21.5705737,-158.092199,3a,37.5y,357.94h,76.31t/data=!3m7!1e1!3m5!1s3clPwqwSyJhERlNsos-
7cA!2e0!6s%2F%2Fgeo1.ggpht.com%2Fcbk%3Fpanoid%3D3clPwqwSyJhERlNsos-
7cA%26output%3Dthumbnail%26cb_client%3Dmaps_sv.tactile.gps%26thumb%3D2%26w%3D203%26h%3D100%26yaw%3D14.11712%26pitch%3D0!7i1331
158.0000565!6m1!1e1) in Hawaii
Carlsbad Cavern
(https://www.google.com/maps/place/Carlsbad+Caverns+National+Park+-
+Information+Center/@32.1770289,-104.4411519,3a,75y,101.83h,54.8t/data=!3m8!1e1!3m6!1s-
T90d_0wPq_8%2FU7jlnwnERYI%2FAAAAAAAABi4%2F7OMF8ZQO5VQ8y7KZXyWh_TT67O4td1Kqg!2e4!3e11!6s%2F%2Flh4.googleusercontent.com%2F-
T90d_0wPq_8%2FU7jlnwnERYI%2FAAAAAAAABi4%2F7OMF8ZQO5VQ8y7KZXyWh_TT67O4td1Kqg%2Fw203-h101-n-k-
no%2F!7i9728!8i4864!4m5!3m4!1s0x86e47995e2247397:0x1e24e2262b796a69!8m2!3d32.1753154!4d-104.4441874!6m1!1e1) or Montezuma's Well
(https://www.google.com/maps/place/Montezumas+Well/@34.6485145,-111.7532658,3a,75y,334.5h,72.16t/data=!3m8!1e1!3m6!1s-Ri-
rOkR75y0%2FVunhpEGGcWI%2FAAAAAAAALsY%2FiGNb-
Mvx8hw3JdRP4iY2AmHMsLrcoj8hQCLIB!2e4!3e11!6s%2F%2Flh5.googleusercontent.com%2F-Ri-
rOkR75y0%2FVunhpEGGcWI%2FAAAAAAAALsY%2FiGNb-Mvx8hw3JdRP4iY2AmHMsLrcoj8hQCLIB%2Fw209-h100-n-k-
no%2F!7i10530!8i5028!4m5!3m4!1s0x872dadb2ba6cafff:0x3affe2541de9154b!8m2!3d34.6489585!4d-111.752935!6m1!1e1)
whitish material in this road cut
(https://www.google.com/maps/@38.3401662,-120.9174383,3a,37.5y,216.37h,81.84t/data=!3m6!1e1!3m4!1s7Vr-
YH7RvBgG6zsfeAAisQ!2e0!7i13312!8i6656!6m1!1e1) at Ione California or the white material being mined here
(https://www.google.com/maps/@36.5172784,-114.4257789,3a,37.5y,227.23h,85t/data=!3m6!1e1!3m4!1s1ZiwERYdWqY3KyLstvhx8Q!2e0!7i13312!8i6656) in
southern Nevada.
Going mudding
(https://www.youtube.com/watch?v=JWViIC_iV-o)
(https://www.youtube.com/watch?v=JWViIC_iV-o)
2/24/24, 7:44 PM
Unit 3 Sculpting Earth's Topography: Lab Practical on Weathering Forms (2 points): GPH 111: Intro to Physical Geography (2…
https://canvas.asu.edu/courses/172892/quizzes/1298474
3/5
Correct!
Streetview of a roadcut in Hawaii or Streetview 2 of the surface of a soil in Hawaii
oxidation
Correct!
Going mudding
hydration
Correct!
Carlsbad cavern or Montesuma's Well
dissolution by carbonation
Correct!
Whitish material (Ione Ca or So NV)
hydrolysis
Question 3
0.5 / 0.5 pts
Correct!
The decay of granitic rocks generates weathering landscapes that many find beautiful. However, a lot of the processes happen underneath the surface. These processes "set the table" for
the landscape to come. This road cut seen in Google Street Views
(https://www.google.com/maps/@38.9768497,-120.1017967,3a,75y,0.05h,79.08t/data=!3m6!1e1!3m4!1s6c1wLL0G4-
1fSpYm3BpHQg!2e0!7i13312!8i6656) near Bliss State Park in California shows a great example of how solid granitic rock can become little more than ___________ when the mineral grains
decay to the point that they physically separate. Select the match with the best answer that fills in the blank.
grus
Correct!
In this Google View
(https://www.google.com/maps/@33.6816828,-111.8110919,3a,75y,87.79h,57.64t/data=!3m8!1e1!3m6!1s-
8YvDXmGhU6U%2FVVZYmIiUwTI%2FAAAAAAAAfIg%2FqfcU05JYSlkfWh95thr8ILq5WHKsFGHVA!2e4!3e11!6s%2F%2Flh6.googleusercontent.com%2F-
8YvDXmGhU6U%2FVVZYmIiUwTI%2FAAAAAAAAfIg%2FqfcU05JYSlkfWh95thr8ILq5WHKsFGHVA%2Fw203-h101-n-k-no%2F!7i7168!8i3584) of the landscape of the northern McDowell
Mountains at Tom's Thumb in Arizona, you see rounded boulders of all different sizes scattered about the landscape. These boulders are called core stones. When the granitic
_____________ erodes due to overland flow washing this material away, the core stones are piled up into form called ________. Select the match that best fills in these blanks.
grus; tors
Correct!
Valley of Fire state park in Nevada is wonderland of sandstone rock decay forms. This Google Earth view
(https://www.google.com/maps/@36.4284815,-114.4607101,3a,30y,240.71h,53.95t/data=!3m8!1e1!3m6!1s-0qJHJYtwd0w%2FVCmRrRuRoBI%2FAAAAAAAA-
Wk%2FwgrEhtXJq3wZRo9jH7P5pnqHQmtzV945g!2e4!3e11!6s%2F%2Flh5.googleusercontent.com%2F-0qJHJYtwd0w%2FVCmRrRuRoBI%2FAAAAAAAA-
Wk%2FwgrEhtXJq3wZRo9jH7P5pnqHQmtzV945g%2Fw203-h101-n-k-no%2F!7i9728!8i4864) shows some dark black surfaces that have been obviously made stronger than the surrounding
decayed sandstone. You can zoom in. You can also spin the view around and see other examples of this ______________ effect. Select the match that best fills in the blank. This Google
Earth
(https://www.google.com/maps/@36.4424617,-114.5178383,3a,37.5y,286.87h,119.93t/data=!3m8!1e1!3m6!1s-
aFHn5B4Kirw%2FVlYCzXH737I%2FAAAAAAAANRk%2F4pDH0lOQkfQwG9WKrR-ctLWKY5sx9SjXwCLIB!2e4!3e11!6s%2F%2Flh4.googleusercontent.com%2F-
aFHn5B4Kirw%2FVlYCzXH737I%2FAAAAAAAANRk%2F4pDH0lOQkfQwG9WKrR-ctLWKY5sx9SjXwCLIB%2Fw203-h101-n-k-no%2F!7i11218!8i5609) view at Valley of Fire shows another
example of this phenomenon. case hardening
Correct!
Valley of Fire state park in Nevada is wonderland of sandstone rock decay forms. This Google Earth view
(https://www.google.com/maps/@36.4284815,-114.4607101,3a,30y,240.71h,53.95t/data=!3m8!1e1!3m6!1s-0qJHJYtwd0w%2FVCmRrRuRoBI%2FAAAAAAAA-
Wk%2FwgrEhtXJq3wZRo9jH7P5pnqHQmtzV945g!2e4!3e11!6s%2F%2Flh5.googleusercontent.com%2F-0qJHJYtwd0w%2FVCmRrRuRoBI%2FAAAAAAAA-
Wk%2FwgrEhtXJq3wZRo9jH7P5pnqHQmtzV945g%2Fw203-h101-n-k-no%2F!7i9728!8i4864) shows great examples of holes in rocks. There are small holes called ___________ and larger
holes called ____________. This Google Earth view
(https://www.google.com/maps/@36.4179517,-114.5590005,3a,75y,114.4h,100.01t/data=!3m8!1e1!3m6!1s-
You will need to match these streetviews (or video) to the chemical weathering processes on the right. Because canvas is lame with matching questions,
you can't see the subscripts, so I'll list the choices here in no particular order
hydration - water is added to minerals such as clay minerals making them slick!
dissolution by carbonation
(http://www.physicalgeography.net/physgeoglos/c.html#carbonation) - CaCO
+ H
CO --> Ca
+ 2HCO
iron oxidation
(http://www.physicalgeography.net/physgeoglos/o.html#oxidation) - 2Fe
O
+ H
0 --> 3Fe
O
+ 2H
hydrolysis
(http://www.physicalgeography.net/physgeoglos/h.html#hydrolysis) - 2KAISi
O
+ 2H
+ 9H
0 --> H
Al
Si
O
+ 4H
SiO
+ 2K
3
2
3
2+
3-
3
4
2
2
3
+ 3
8
+
2
4
2
2
9
4
4
+
In the weathering (rock decay) lectures (
processes
(http://www.asu.edu/courses/gph111/BreezeLectures/24WxProcesses/24PublishWxProcess/index.htm) and forms
(http://www.asu.edu/courses/gph111/BreezeLectures/25WxForms/25PublishWxForms/index.htm) )about weathering, you are exposed to a lot of weathering forms. This lab practical asks you
to take the next step -- of seeing if you can identify these forms and connect them to processes in the real world. Have fun with the matching questions that mostly use Google Street views
to allow you to explore a bit more than a static picture.
Your preview ends here
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