GLG120 Week7 HW
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School
Montgomery County Community College *
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Course
120
Subject
Geography
Date
Dec 6, 2023
Type
docx
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4
Uploaded by LieutenantProton12054
GLG 120
Name:_______________
Homework #7
Date:________________
1.
A river system consists of three zones, based on the dominant process operating in each part of the river system. On the accompanying illustration, match each process with one of the three zones:
a.
Sediment production (erosion)
b.
Sediment deposition
c.
Sediment transport
2.
This image, taken from the International Space Station, shows a plateau and canyons in central Saudi Arabia. Over a long time span, how will the canyons likely change? How will the plateau be affected? Is there a term that describes the process?
3.
What factors influence how much rain will soak into the ground compared to how much will run off?
4.
If you collect a jar of water from a stream, what part of its load will settle to the bottom of the jar? What portion will remain in the water indefinitely? What part of the stream’s load would probably not be represented in your sample?
5.
The Middle Fork of the Salmon River flows for about 175 kilometers (110 miles) through a rugged wilderness area in central Idaho.
a.
Is the river flowing in an alluvial channel or a bedrock channel? Explain.
b.
What process is dominant here: valley deepening or valley widening?
c.
Is the area shown in this image more likely near the mouth of the river or the head?
6.
What is the likely difference between an intermittent stream (one that flows off and on) and a stream that flows all the time, even during extended dry periods?
7.
The cemetery in this photo is located in New Orleans, Louisiana. As in other cemeteries in the area, all of the burial plots are above ground. Based on what you have learned in this chapter, suggest a reason for this rather unusual practice.
8.
During a trip to the grocery store, your friend wants to buy some bottled water. Some brands promote the fact that their product is artesian. Other brands boast that their water comes from a spring. Your friend asks, “Is artesian water or spring water necessarily better than water from other sources?” How would you answer?
9.
This black–and-white photo from the 1930s shows Franklin Roosevelt enjoying the hot springs at the presidential retreat at Warm Springs, Georgia. The temperature of these hot springs is always near 32°C (90°F). This area has no history of recent volcanic activity. What is the likely reason these springs are so warm?
10. Imagine that you are an environmental scientist who has been hired to solve a groundwater contamination problem. Several homeowners have noticed that their well water has a funny smell and taste. Some think the contamination is coming from a landfill, but others think it might be a nearby cattle feedlot or chemical plant. Your first step is to gather data from wells in the area and prepare the map of the water table shown here.
a.
Based on your map, can any of the three potential sources of contamination be eliminated? If so, explain.
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b.
What other steps would you take to determine the source of the contamination?