Grand Canyon Geomorphology: Why So Different? : GPH 112: Intro to Phys Geography Lab (2024 Spring).p

Grand Canyon Geomorphology: Why So Di ff erent? Due Apr 30 at 11:59pm Points 7.5 Questions 8 Available after Mar 24 at 12am Time Limit None Instructions In the previous lab, you learned of some hypotheses for the formation of the Grand Canyon. Additionally then, we need to explain why the sides of the canyon (north and south of the river) differ so much from each other.

Attempt History Attempt Time Score LATEST Attempt 1 7 minutes 7.33 out of 7.5 Score for this quiz: 7.33 out of 7.5 Submitted Mar 24 at 6:33am This attempt took 7 minutes. This is an almost straight-down looking view (planimetric) of the heart of the Grand Canyon, between the South Rim and the North Rim visitor centers. Clearly, one side (of the Colorado River) is not like the other. Focus on the Colorado River and compare the south (lower) side to the north (upper) side. You should notice a difference in tributary stream lengths, drainage basin sides, and the presence or absence of of temples (isolated mountains inside the canyon). So the question is: WHY? Why does there exist such a dramatic asymmetry in the geomorphology of these two sides? It is your task in this lab to figure out a reasonable and testable answer by reviewing multiple hypotheses.

 Question 1 1 / 1 pts Now let's look at the major differences between the northern and southern side of the canyon, first by looking at the presence of temples. Temples are mountains inside the Grand Canyon. Photographers love to image them from all different angles. Isis Temple Shiva Temple Brahma & Zoroaster Temples Your task is straight forward. Take helicopter flights across the Grand Canyon to figure out where they are found. Just look around for isolated mountains and determine if they are on the north side of the Colorado River or the south side of the Colorado river. There really isn't another choice. Take two trips via helicopter and look for Temples and also the size of the drainage basins (watersheds) draining the two sides). SOUTH SIDE FAST TRAVEL HELICOPTER TRIP Start: 36.1158 -112.2798 End: 36.0184 -111.9420

Correct! Temples are found mostly on the north side of the Colorado River Temples are found mostly on the south of the Colorado River There are a few features that might be considered temples on the south side of the Colorado River, but nothing is named. All of the famous Temples and 99% of the isolated mountains are found on the northern side of the river.  Question 2 1 / 1 pts NORTH SIDE FAST TRAVEL HELICPOPTER TRIP Start: 36.2643 -112.2853 End: 36.0692. -111.9530 Drainage basins (tributary streams to the Colorado and all of their tiny tributaries) are found on both sides of the Colorado River. Their size is vastly different on the north and south sides. Refer back to the two helicopter trips you took in the previous question, and also refer to this International Space Station image of the Grand Canyon that has been annotated to compare opposing watersheds on the north and south sides of the river:

east west south Correct! north The north side of the Colorado River has vastly larger drainage basins (watersheds).  Question 3 1 / 1 pts QUESTION: What side of the Grand Canyon (between the North and South Rims) have the bigger drainage basins? Hypothesis 1: One of the first white explorers to keep a written record of their journeys to Grand Canyon region took

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