IT 242 Chapter 9 Questions
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Southern New Hampshire University *
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242
Subject
Geography
Date
Feb 20, 2024
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docx
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7
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IT 242
Professor Katie
IT 242 Chapter 9 Questions
How many counties in the United States are named for Abraham Lincoln?
Based on the table, it appears that there are 23 counties named for Lincoln in the USA.
How many cities in the United States contain the word
City
? How many cities end with the word
City
?
105 cities in the United States appear to contain the word city. What percentage of state capitals lies within 25 miles of a river?
2,397 counties lie within 25 miles of a river.
How many states contain at least one volcano?
12
states contain at least one volcano.
Congress has awarded FEMA 100 million dollars to help large cities prepare for earthquakes. The cities that qualify for the funding must have more than 500,000 people and be less than 50 miles from one or more earthquakes exceeding 6.0 in magnitude. How many cities are eligible? Which eligible cities are NOT in California?
A conservation group is looking for a place to establish a private bison preserve. The group
has developed a set of criteria to narrow down the possibilities. Help them with their analysis.
To solve this problem, I first set out to discover how many cities in the US have more than 500,000 people and discovered that 6,192 cities have populations exceeding this amount:
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After creating a spatial join between the cities and quakes features and using the ‘select by attributes’ feature to select for cities with over 500,000 people and within 50 miles of an earthquake, I then used the ‘select by attribute’ feature to further narrow this list down to only include earthquakes that were over level 6 in magnitude. According to my results, there appear to
be 226 cities that meet this criteria:
The first step is to target counties that are within the Great Plains states (the stack of states from North Dakota to Texas) or within 100 miles of the Great Plains states. These counties also need to have a population density less than 10 people per square mile. Capture a map showing these target counties.
According to the table, 281 counties with a population density equal to or less than 10 people per square mile lie within the Great Plains states from North Dakota to Texas:
The next step is to exclude areas in the target counties that are less than 30 miles from an interstate highway or 30 miles from a city. Capture a map showing the remaining areas under consideration.
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I continued to try to create spatial joins between the cities and roadways within 30 miles of the highlighted counties in the Great Plain States, but for some reason the county selection would remain at ‘281 of 576’. I tried unsuccessfully to export new layers to re-attempt. Next, the best area would be within 50 miles of a major river. Determine the areas that also
meet this requirement and capture a map of them. The preserve must be on private lands. Find the ArcGIS Online feature layer Federal_and_Tribal_Land and use it to exclude such
areas. Capture a map of the remaining land.