Geology Lab #1 Topographic Maps
How long is the Wawona Tunnel just north of Inspiration Point on Wawona Road?
4250ft
What is the fractional scale of the topographic map?
1 inch = 2,000 feet
A mile on the ground would be what distance (in inches) on a 1:50,000 scale topographic map?
1.26
On a 1:125,000-scale map, one inch represents what distance on the ground?
1.97 miles
What is the fractional scale of the topographic map?
1/24000
What meridian is the eastern limit of the topographic quadrangle map?
119° 29' 10" W
Using the bar scale provided in the map margin, measure the length of the southern boundary of the topographic map from El Portal to Merced Peak. The distance in miles is about
14.5 miles
In Figure 1.7, what is the elevation of the mine (locate the mining symbol) on Prospect Hill?
140 ft
What is the magnetic declination of the topographic quadrangle map?
17.5 East
This topographic quadrangle map was compiled from aerial photographs taken in
1955
In what year was the magnetic declination measured?
1958
The approximate shortest road miles distance from Yosemite Lodge to Mirror Lake is _______________ miles.
3
What is the elevation of the lowest point benchmark "BM" on the topographic quadrangle?
3,227 feet above sea level
What parallel marks the northern limit of the topographic quadrangle map?
37° 47' 05" N
What is the contour interval of the USGS topographic map of Yosemite Valley in your lab kit?
40ft
What is the total relief within the topographic quadrangle map?
6699ft
What mountain, peak or dome has the highest elevation point on the topographic map?
Clouds rest
What is the general location of this map area in the state of California?
East Central
What type of rock did the glaciers and Merced River excavate to form Yosemite Valley?
Granite
What is the quadrant bearing from the first "L" in Lost Lake to the "Q" in Quarter Domes near the east end of Yosemite Valley topographic map?
N 35 E
Using the USGS Topographic Map Symbols pamphlet in the laboratory kit, what type of lake is Starr King Lake on the USGS Yosemite Valley topographic map?
Perennial lake
Identify the section, township, and range for Elephant Rock.
Sec. 36, T.2S, R20E
What answer below represents the profile in Figure 1.9a between point A and point A1?
The ones that don't look similar with the big space in the middle
Why are there so many curves and switchbacks in the Glacier Point Road?
make roads safer ans easier to drive
Which of the following areas of Yosemite Valley appears to be the steepest?
middle brother
If you were a casual recreational hiker with young children, which of the following trails would be least strenuous for a leisurely family outing?
mirror lake loop trail
Starr King Lake drains in which direction?
southeast
What direction does the Merced River flow through the valley floor from Sentinel bridge to El Capitan Bridge?
southwest
According to the Prospect Hill contour map in Figure 1.7, the land surface could be:
two hills with a lower area between them
What is the shape of the Yosemite Valley, which is typical of glaciated valleys?
u
