HW 09: Topographic Profile

Which of the following is the best estimate of the overall gradient of the land between them?

161 feet/mile

Locate the Starved Rock State Park, Illinois. Adjust the zoom so you can see both the lodge and Plum Island, which is northwest of the lodge. What is the approximate distance between the campground and the northwestern tip of Plum Island?

2.1 miles

The topographic map shown below displays the topography and bathymetry of a coastal area. What is the approximate total topographic relief represented in this map?

200 feet

The map below shows a portion of a topographic quadrangle map. Its horizontal scale is 1:24,000. Suppose you plan to construct a topographic profile from the Puritan Mine to the Red Rover Mine with a vertical scale of one inch equals 60 feet. What will the vertical exaggeration of the topographic profile be?

33.3x

Point B is located at 40° south latitude and 20° west longitude. Assuming that Point B is at the northwest corner of a 15-minute quadrangle map, what is the latitude and longitude of the southeast corner of the map?

40° 15' south latitude, 19° 45' west longitude

Now determine the latitude and longitude of Point B.

40° south; 20° west

Using Placemark A, which of the following is the best estimate of the latitude and longitude of the park in degrees, minutes and seconds?

41° 18' 20 N, 88° 58' 29 W

What is the elevation of the Starved Rock State Park, Illinois? Use Placemark A as reference point. If your elevation in Google Earth™ is any unit besides feet, go to "Tools" > "Options" and change the "Unit of Measurement" unit to "Feet, Miles".

635 feet

Again, refer to the geologic map below, with particular attention to the rock formation labeled "A." What is the direction of strike for the rock formation?

northwest