Geology Unit 3 - Topographic Maps Flashcards
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Questions and Answers

Examples of topographic map scales are 1:250,000, 1:125,000, 1:62,500 and 1:24,000. Of these listed, which is the largest scale?

  • 1:24,000 (correct)
  • 1:125,000
  • 1:62,500
  • 1:250,000
  • Examples of topographic map scales are 1:250,000, 1:125,000, 1:62,500 and 1:24,000. Of these listed, which is the smallest scale?

  • 1:24,000
  • 1:125,000
  • 1:62,500
  • 1:250,000 (correct)
  • On a map with a scale of 1:24,000, two points that are 3.4 inches apart would actually be (in feet)

    6,800 feet apart

    On a map with a scale of 1:62,500, two points that are 4 centimeters apart would actually be (in meters)

    <p>2,500 meters apart</p> Signup and view all the answers

    If you have a map that has a scale of 1:125,000 and the '1' refers to 1 inch, then the '125,000' must be equal to:

    <p>125,000 inches</p> Signup and view all the answers

    A scale on which one inch equals 1000 feet would be written on a map as which of the following ratio scales?

    <p>1:12,000</p> Signup and view all the answers

    For the following map scales, which would cover a larger area? 1:120,000 ; 1:62,500 ; 1:24,000 ; 1:12,000

    <p>1:120,000</p> Signup and view all the answers

    For the following map scales, which would show greater detail (such as buildings and other structures)? 1:120,000 ; 1:62,500 ; 1:24,000 ; 1:12,000

    <p>1:12,000</p> Signup and view all the answers

    Map relief is defined by

    <p>the change in elevation between the highest and lowest elevations on a map</p> Signup and view all the answers

    Which of the following verbal map scales would cover the smallest area? 1in=10,000ft; 1in=300ft; 1cm=10,000cm; 1cm=300cm

    <p>1cm=300cm</p> Signup and view all the answers

    The verbal scale of 1 in = 3.5 miles would become which of the following ratio scales?

    <p>1:18,480</p> Signup and view all the answers

    What is the equation for a river gradient?

    Signup and view all the answers

    Study Notes

    Topographic Map Scales

    • Largest scale among the given examples is 1:24,000, indicating higher detail over a smaller area.
    • Smallest scale among the examples is 1:250,000, covering a larger area with less detail.
    • Scale impacts the representation of distances; for a 1:24,000 map, 3.4 inches equals 6,800 feet in reality.
    • On a 1:62,500 map, a distance of 4 centimeters represents 2,500 meters.

    Understanding Scale Units

    • A scale of 1:125,000 means that "1" inch on the map corresponds to 125,000 inches in reality.
    • A map scale where one inch equals 1,000 feet is denoted as 1:12,000.

    Area and Detail Representation

    • Among various scales, 1:120,000 covers the largest area, providing less detail than finer scales.
    • Conversely, 1:12,000 shows greater detail, useful for identifying structures like buildings.

    Map Relief and Area Coverage

    • Map relief is defined as the change in elevation between the highest and lowest points represented.
    • The verbal scale of 1 in = 3.5 miles translates to a ratio scale of 1:18,480.

    Comparing Scales

    • Between the verbal scales 1in=10,000ft, 1in=300ft, 1cm=10,000cm, and 1cm=300cm, the smallest area covered is represented by 1cm=300cm.

    River Gradient

    • The specific equation for a river gradient was referenced but is not provided herein.

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    Test your knowledge on topographic maps with these flashcards. Understand scale differences and application in geography. Perfect for students studying Geology Unit 3.

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