Geology Lab Exam II Questions with
100% Correct Answers | Latest Update
A topographic map has a ratio scale of 1:250,000. One centimeter on the
map equals _____ kilometers in the real world. - ✔✔2.5
Assuming a contour interval of 50 feet, what is the elevation of the
centermost contour line in this figure? Please observe that the first contour
line has an elevation of 100 feet above sea level. - ✔✔300 feet
Use the Public Land Survey System to locate the X out to three quarters.
Assume that it is located in Township 1N and Range 3E. - ✔✔NE 1/4, NE
1/4, NW 1/4, Sec. 32, T1N, R3E
What information do contour lines provide? - ✔✔elevation above sea level
Using the topographic map in the figure, follow along line X-X' and
determine what the topographic profile would look like. Choose the
appropriate profile below. - ✔✔Answer: B
On this map, what is the change in elevation between two adjacent index
contour lines? (Answer to the nearest foot.) - ✔✔200 feet
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
,What is the change in elevation across each contour interval (i.e., between
successive "regular" contours) on this map? - ✔✔40 feet
Which of the following statements best describes the topography around
placemark A and the resulting appearance of the spacing of the contour
lines on the map? - ✔✔The land surface is relatively flat, and the contours
are widely spaced.
In which direction do the Vs formed by the contour lines point as a stream
crosses them? - ✔✔Upstream
What are the elevations of placemarks G and H respectively? - ✔✔5540
feet; 5930 feet, respectively
Using the change in elevation from Part D, calculate the straight-line
gradient between placemarks G and H. Calculating the slope here is
exactly the same as in geometry, divide rise over run. - ✔✔0.795
Which answer most correctly describes the landform at placemark I and the
appearance of the contour lines in the area? - ✔✔The landform is a ridge,
and the contour lines form Vs that point downslope.
Which answer most correctly describes the landform at placemark J and
the appearance of the contour lines in the area? - ✔✔The landform is a flat-
2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
,topped hill, or peak, called a butte. The contour lines form concentric
closed loops around the high point.
Which was updated more recently, the topographic map or the satellite
imagery? How can you tell? - ✔✔The satellite imagery was updated more
recently. This is evidenced by roads and buildings that appear in the
satellite imagery but not on the topographic map.
The latitude-longitude coordinate system provides reference lines from
which to measure the location of a point on Earth's surface. For example,
Point A is located at 20° north latitude and 120° west longitude.
Now determine the latitude and longitude of Point B. - ✔✔40 degrees
south; 20 degrees west
A common size of U.S. Geological Survey map is a 15-minute quadrangle
map, which measures 15 minutes of latitude by 15 minutes of longitude.
Below you will use the latitude and longitude of one corner of a 15-minute
quadrangle map to determine the latitude and longitude of another corner.
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 degrees 15' south latitude, 19 degrees 45' west longitude
3
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, Launch Google Earth™ by clicking on this link to locate the Starved Rock
Lodge at Starved Rock State Park, Illinois. If you do not have Google Earth
installed, download it at http:/www.google.com/earth/index.html and install
it on your computer before you begin.
In the Layers Panel on the lower right, make sure the Borders and Labels
and Places boxes are checked.
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 degrees 18' 20 N, 88 degrees 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
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
In the Universal Traverse Mercator System, the distance measured in
meters from the Equator is the ____________ coordiante - ✔✔northing
4
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
100% Correct Answers | Latest Update
A topographic map has a ratio scale of 1:250,000. One centimeter on the
map equals _____ kilometers in the real world. - ✔✔2.5
Assuming a contour interval of 50 feet, what is the elevation of the
centermost contour line in this figure? Please observe that the first contour
line has an elevation of 100 feet above sea level. - ✔✔300 feet
Use the Public Land Survey System to locate the X out to three quarters.
Assume that it is located in Township 1N and Range 3E. - ✔✔NE 1/4, NE
1/4, NW 1/4, Sec. 32, T1N, R3E
What information do contour lines provide? - ✔✔elevation above sea level
Using the topographic map in the figure, follow along line X-X' and
determine what the topographic profile would look like. Choose the
appropriate profile below. - ✔✔Answer: B
On this map, what is the change in elevation between two adjacent index
contour lines? (Answer to the nearest foot.) - ✔✔200 feet
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
,What is the change in elevation across each contour interval (i.e., between
successive "regular" contours) on this map? - ✔✔40 feet
Which of the following statements best describes the topography around
placemark A and the resulting appearance of the spacing of the contour
lines on the map? - ✔✔The land surface is relatively flat, and the contours
are widely spaced.
In which direction do the Vs formed by the contour lines point as a stream
crosses them? - ✔✔Upstream
What are the elevations of placemarks G and H respectively? - ✔✔5540
feet; 5930 feet, respectively
Using the change in elevation from Part D, calculate the straight-line
gradient between placemarks G and H. Calculating the slope here is
exactly the same as in geometry, divide rise over run. - ✔✔0.795
Which answer most correctly describes the landform at placemark I and the
appearance of the contour lines in the area? - ✔✔The landform is a ridge,
and the contour lines form Vs that point downslope.
Which answer most correctly describes the landform at placemark J and
the appearance of the contour lines in the area? - ✔✔The landform is a flat-
2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
,topped hill, or peak, called a butte. The contour lines form concentric
closed loops around the high point.
Which was updated more recently, the topographic map or the satellite
imagery? How can you tell? - ✔✔The satellite imagery was updated more
recently. This is evidenced by roads and buildings that appear in the
satellite imagery but not on the topographic map.
The latitude-longitude coordinate system provides reference lines from
which to measure the location of a point on Earth's surface. For example,
Point A is located at 20° north latitude and 120° west longitude.
Now determine the latitude and longitude of Point B. - ✔✔40 degrees
south; 20 degrees west
A common size of U.S. Geological Survey map is a 15-minute quadrangle
map, which measures 15 minutes of latitude by 15 minutes of longitude.
Below you will use the latitude and longitude of one corner of a 15-minute
quadrangle map to determine the latitude and longitude of another corner.
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 degrees 15' south latitude, 19 degrees 45' west longitude
3
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, Launch Google Earth™ by clicking on this link to locate the Starved Rock
Lodge at Starved Rock State Park, Illinois. If you do not have Google Earth
installed, download it at http:/www.google.com/earth/index.html and install
it on your computer before you begin.
In the Layers Panel on the lower right, make sure the Borders and Labels
and Places boxes are checked.
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 degrees 18' 20 N, 88 degrees 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
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
In the Universal Traverse Mercator System, the distance measured in
meters from the Equator is the ____________ coordiante - ✔✔northing
4
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
