Quiz-6

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University of Minnesota-Twin Cities *

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3301

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Geography

Date

Oct 30, 2023

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docx

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Uploaded by alswjddl777

Question 1 Correct Grade 1.0 out of 1.0 Flag question Question text What is meant by the term, "Great Lakes Basin"? Select one: a. The region of land that drains back to the Great Lakes, or the Great Lakes watershed. b. The volume of the Great Lakes. c. The term refers to the size of an area if all the Great Lakes water were spread over the land. d. The footprint of the Great Lakes, themselves. Feedback Your answer is correct. "Basin", in this case, is another word for "watershed". The correct answer is: The region of land that drains back to the Great Lakes, or the Great Lakes watershed. Question 2 Correct Grade 1.0 out of 1.0 Flag question Question text

When Colorado River withdrawals were first allocated among the river basin’s seven states in 1922 the river held 17.5 million acre-feet (5.7 trillion gallons) of water per year. However today we know that there is substantially less water available than that because they measured the river flow during a wet time period. Select one: True False Feedback The correct answer is 'True'. Question 3 Correct Grade 1.0 out of 1.0 Flag question Question text Lake Erie was cleaned up substantially by the year 2000 since many efforts were made to reduce phosphorus from industrial pipe outlets and to eliminate it from many laundry detergents and soaps. However by the mid-2000s the algae blooms were coming back even more severely then they were in the late 1960s and 1970s. What is the main source of phosphorus draining into Lake Erie in the present day? Select one: a. wastewater effluent b. power plant cooling water c. irrigation canals d. agricultural runoff and drainage Feedback Your answer is correct. The correct answer is: agricultural runoff and drainage

Question 4 Correct Grade 1.0 out of 1.0 Flag question Question text The Colorado River delta near the Mexican border runs dry as it empties into the Gulf of California. The delta used to support a lush ecosystem prior to water diversions from the Colorado that deplete the river to almost no flow most years. Which of the following is a goal of the restoration efforts in the Colorado River delta. Select one: a. To remove the Morales Dam near the Mexican border to restore the flow b. To stabilize stream banks c. To release water so support regrowth of riparian vegetation d. To support salmon habitat in the lower river Feedback Your answer is correct. The correct answer is: To release water so support regrowth of riparian vegetation Question 5 Correct Grade 1.0 out of 1.0 Flag question Question text Dams provide benefits to humans such as flood control or hydro-power. However they often have negative impacts on the environment as well. Which of the following is not one of the negative impacts of dams on river ecosystems?

Select one: a. changes the timing of flow patterns that can impact stream life b. accumulates sediment behind the dam c. increases the streamflow downstream of the dam d. blocks fish passage Feedback Your answer is correct. The correct answer is: increases the streamflow downstream of the dam Question 6 Correct Grade 1.0 out of 1.0 Flag question Question text Who uses the most water from the Great Lakes when hydroelectric power is included? Select one: a. Ontario b. New York c. British Columbia d. California e. Wisconsin f. Minnesota Feedback Your answer is correct. For the complete picture, see the pie charts that are posted in the required reading. The correct answer is: Ontario

Question 7 Correct Grade 1.0 out of 1.0 Flag question Question text Some water conservation and more sustainable water management approaches are described for "Green Water" near the end of the presentation. Which of the following were included in that list? Select one or more: a. transferring water via canals from water rich to water scarce areas b. use of crops that use less water (have a lower crop coefficient) c. building larger reservoirs to hold water for irrigation d. drip irrigation to reduce water loss Feedback Your answer is correct. The correct answers are: use of crops that use less water (have a lower crop coefficient), drip irrigation to reduce water loss Question 8 Correct Grade 1.0 out of 1.0 Flag question Question text

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