Module 11 Running Water Lab_Quiz_ (Fall 2023) GOL 105 (E80A) - Physical Geology.pdf

11/28/23, 12:24 PM Module 11 Running Water Lab/Quiz: (Fall 2023) GOL 105 (E80A) - Physical Geology https://learn.vccs.edu/courses/561793/quizzes/4264046 1/38 Module 11 Running Water Lab/Quiz Due 29 Nov at 23:59 Points 60 Questions 28 Time limit None Allowed attempts 3 Instructions Module 11 Running Water Lab Purpose The purpose of completing this Module 11 Running Water Lab assignment is to reinforce the concepts presented in this Module. Directions All the topographic maps used in the exercise are also gathered together in this GigaPan image (Links to an external site.) (https://viewer.gigamacro.com/view/mcmmbwGWMQrI7E88?x1=12401.50&y1=-2132.00&res1=18.16&rot1=0.00) . We recommend using the GigaPan image to answer all the lab questions, since in a few cases specific areas of the maps are highlighted/outlined in black boxes. Always remember that when you adjust the magnification of a GigaPan map, you are also altering the horizontal scale bar! If for some reason the GigaPan map collection is giving you trouble, then you may go to the individual PDFs of the USGS topo maps linked below. The lab assignment contains references to these individual topographic maps East Brownsville, Texas (https://learn.vccs.edu/courses/561793/files/147274169/download?wrap=1) (https://learn.vccs.edu/courses/561793/files/147274169/download?download_frd=1) Paw Paw, West Virginia (https://learn.vccs.edu/courses/561793/files/147274181/download?wrap=1) (https://learn.vccs.edu/courses/561793/files/147274181/download?download_frd=1) Waldron, Arkansas (https://learn.vccs.edu/courses/561793/files/147274151/download?wrap=1) (https://learn.vccs.edu/courses/561793/files/147274151/download?download_frd=1) Red Leaf, Arkansas (https://learn.vccs.edu/courses/561793/files/147274156/download?wrap=1) (https://learn.vccs.edu/courses/561793/files/147274156/download?download_frd=1)

11/28/23, 12:24 PM Module 11 Running Water Lab/Quiz: (Fall 2023) GOL 105 (E80A) - Physical Geology https://learn.vccs.edu/courses/561793/quizzes/4264046 2/38 Lake Scott, Kansas (https://learn.vccs.edu/courses/561793/files/147274176/download?wrap=1) (https://learn.vccs.edu/courses/561793/files/147274176/download?download_frd=1) Ennis, Montana (https://learn.vccs.edu/courses/561793/files/147274187/download?wrap=1) (https://learn.vccs.edu/courses/561793/files/147274187/download?download_frd=1) , and adjacent Fan Mountain, Montana (https://learn.vccs.edu/courses/561793/files/147274414/download?wrap=1) (https://learn.vccs.edu/courses/561793/files/147274414/download?download_frd=1) Note: two different contour intervals exist on these two related maps Finally, this comparison image will be useful for answering questions about what stage of river landscape evolution you are observing on the maps: Complete the activity, entering your answers using the Module 11 Running Water Lab link. There is no time limit. You have up to three attempts to complete the assignment, but you must complete the entire assignment and submit it each time. The highest grade will be recorded in Grades.

11/28/23, 12:24 PM Module 11 Running Water Lab/Quiz: (Fall 2023) GOL 105 (E80A) - Physical Geology https://learn.vccs.edu/courses/561793/quizzes/4264046 3/38 * Some questions not yet graded Attempt history Attempt Time Score KEPT Attempt 2 6 minutes 52 out of 60 * LATEST Attempt 2 6 minutes 52 out of 60 * Attempt 1 27 minutes 48 out of 60 *  Answers will be shown after your last attempt Score for this attempt: 52 out of 60 * Submitted 28 Nov at 12:23 This attempt took 6 minutes. Grading Your assignment will be graded according to how many answers you get correct on the lab. There are 60 possible points, including two short "essay" questions and many multiple choice or fill-in-the-blank questions. Take the quiz again 2 / 2 pts Question 1 Map of East Brownsville, TX: What stage of ﬂuvial landscape development is shown on this map?

11/28/23, 12:24 PM Module 11 Running Water Lab/Quiz: (Fall 2023) GOL 105 (E80A) - Physical Geology https://learn.vccs.edu/courses/561793/quizzes/4264046 4/38 youth maturity old age rejuvenation 2 / 2 pts Question 2 Map of East Brownsville, TX: Why does the USA-Mexico boundary ( i.e. , the Rio Grande river) frequently change posi±on? Because the river meanders from side to side. Because politicians redraw the border frequently. Because the river avulses (changes its position) from one braided channel to another. Because the oxbow lakes migrate closer and closer to the main river channel over time. 2 / 2 pts Question 3

11/28/23, 12:24 PM Module 11 Running Water Lab/Quiz: (Fall 2023) GOL 105 (E80A) - Physical Geology https://learn.vccs.edu/courses/561793/quizzes/4264046 5/38 Map of East Brownsville, TX: Would this interna±onal boundary be more, or less stable (in terms of its physical posi±on on the landscape), if base level was to drop? Less stable. Base level drop would lead to increased meandering. Less stable. Base level drop would flood the entire region. More stable. Base level drop would lead to an increase in oxbow lakes in the region. More stable. Base level drop would cause the river to incise, locking it in place on the landscape. 2 / 2 pts Question 4 Map of Paw Paw, WV (+MD): What channel type is shown here? straight meandering sinuous braided

11/28/23, 12:24 PM Module 11 Running Water Lab/Quiz: (Fall 2023) GOL 105 (E80A) - Physical Geology https://learn.vccs.edu/courses/561793/quizzes/4264046 6/38 2 / 2 pts Question 5 Map of Paw Paw, WV (+MD): What stage of ﬂuvial landscape development is shown on this map? youth maturity old age rejuvenation 2 / 2 pts Question 6 Map of Paw Paw, WV (+MD): Why are there no oxbow lakes associated with the meanders developed here? (Hint: note the magnitude of the eleva±on contours) Weird; an old age river system it should have oxbows... I don't get it. The rejuvenation has incised the river, "entrenching" the meanders into bedrock. They are no longer moving side to side over time. This river is too young to have yet developed any oxbows. This isn't a natural river pattern, but a human-constructed river channel shape.

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