Physical Geology On-line Lab and Helpful Lab Hints

Exercise 6: Topographic Maps

Problem 1

Problem 2f

Problem 4

1. Drawing contour lines
   • Start here
   • Draw the 10 ft. contour, remember to follow the rules of contour lines (see p. 95-96) (check your work here)
   • The 40 ft. contour is a but tricky because a 40 ft. contour has alread been drawn for a hill top. Your 40 ft. contour should not touch the hill top contour. (check your work here, you still need to draw the 20, 30, and 50 ft contour lines)
2. To find the waterfall, look along the rivers (blue lines) and think about what might indicate a waterfall.
3. Follow these steps:
   1. Find the the top of the hill inside the 40 ft contour. It is the one contour line that was already drawn for you.
   2. Convert the fractional scale (1:8,400) to a verbal scale 1 in = _____ ft (scale conversion help here).
   3. Measure the length and width of the hill top (inside the 40 ft contour line) in inches, convert the inches to feet using the verbal scale.
   4. To determine the area, multiply the length by the width.

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last updated: 2020-08-20