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Name
3.8 TOPOGRAPHIC MAPS LAB ASSIGNMENT
Note: This lab is in color. Therefore, if you print it out in black and white
please refer back to the electronic copy to avoid confusion.
This Lab Assignment is to be mailed to your Instructor at the contact address
recorded in the Syllabus. Make sure that you use additional postage if needed.
There is no online assessment for the Topographic Maps Lab.
Complete the entire assignment and mail to your instructor postmarked by the
assignment deadline. You should make an extra copy to practice on and mail in a
clean and neat version for grading. Make sure to include your name on every page
and staple all of the pages together.
Please take advantage of all of the resources available to you. Be sure to read
the corresponding lecture which contains directions to work out the solutions to
the problems below. You should also review the instructional videos located in
the unit content area within the course for additional assistance. Finally, check
the Topographic Map Unit Discussion forum and the tutor talk area for additional
resources and hints.
3.8.1 Topographic Maps Lab
NOTE: For all of the following figures, assume North is up.
1. (10 pts) The following topographic map (Map 3.1) is from a coastal area and
features an interesting geological hazard in addition to the Ocean. Using a
contour interval of 40 meters, label the elevation of every contour line on the
map below. (Note: elevation is meters above sea level, which makes sea level =
m).
shoreline
Map 3.1
Author: Brad Deline
Source: Original Work
License: CC BY-SA 3.0
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2. (10 pts) Imagine you are a geologist for the United States Geological Survey.
You are tasked with creating your own coastal Topographic map, so you hike
around the area with a GPS receiver (Global Positioning System) and every so
often you record your position along with the elevation in meters at that point,
which results in the following map (Map 3.2). Complete Map 3.2 by adding in
the contour lines using a contour interval of 100 meters. Draw the contour lines so
that they are continuous (do not die off), and either continue off the map or
form an enclosed circle (look at the topographic map in the problem 1 for an
example). More often than not, your contour lines will fall between the GPS
points on your map, so do your best to determine the contour line positions.
492
290
180
570
386
70
250
12
132
441
334
630
506
412
290
95
160
498
306
107
614
400
210
400
560
442
530
510
389
711
328
665
476
386
Map 3.2
Author: Brad Deline
Source: Original Work
License: CC BY-SA 3.0
For questions 3-7 refer to the Map 3.3. The following topographic map shows
an interesting and informative geological feature called a drumlin, which is a pile
of sediment left behind by a retreating glacier.
800 feet
OB
900 feet
Map 3.3
Author: Brad Deline
Source: Original Work
License: CC BY-SA 3.0
1000 feet
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3. (2 pts) What is the contour interval on Map 3.3?
4. (2 pts) What is the regional relief on Map 3.3?
5. (5 pts) Using the contour lines on Map 3.3, which area along the red line is
steeper A to B or B to C? Explain how you came to this conclusion.
6. (5 pts) What is the gradient from A to B and B to Con Map 3-32 Show your work.
7. (2 pts) Drumlins can be used to determine the direction of movement in the
glacier with the ier tows the shallower side of the structure. Using
your previous answers for Map 3.3, what direction was the glacier traveling?
Note: unless indicated otherwise, assume that North is up (towards the top of
the map).
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8. (20 pts) Construct a topograp… POLIC-IULIA-UUR on the graph paper below.