convergent divergent

Description

1. Search for “Brasstown Bald, Georgia” and zoom into ~10,000 feet eye altitude. What is the

latitude of the top of the mountain?
a. 83 o 48’ 39” E b. 83 o 48’ 39” W c. 34o 52’ 28” N d. 34 o 52’ 28” S
2. What is the longitude of Brasstown Bald?
a. 83 o 48’ 39” E b. 83 o 48’ 39” W c. 34o 52’ 28” N d. 34 o 52’ 28” S
3. Locate the parking lot to the south. What is the elevation of the parking lot in feet?
a. 800 feet b. 4,358 feet c. 3,812 feet d. 10,000 feet
4. Using the Ruler tool/Polygon setting, measure the area of the parking lot south of Brasstown
Bald, in square miles.
a. ~2.29 sq. mi. b. ~.73 sq. mi. c. ~1 sq. mi. d. ~.01 sq. mi.
5. Using the Ruler/Polygon setting, what is the perimeter of the area you just measured – the
distance around the base of the mountain?
a. ~0.42 mi. b. ~3.0 mi. c. ~3.83 mi. d. ~3.25 mi.
6. Now find the bearing from the start of the Wagon Train walking trail at the parking lot up to
the top of Brasstown Bald?
a. 354o b. 97 o c. 102 o d. 202 o
7. If you decided instead to walk from the trailhead to the top of the mountain, how far would
you have to walk, in miles (use Ruler/Line setting)?
a. 0.56 mile b. 1 mile c. 1.20 miles d. 0.25 miles

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8. How far is this distance in kilometers?
a. 0.5 kilometers b. 0.41 kilometers c. 1.6 kilometers d. 1.9 kilometers
9. Overall, would you be walking uphill or downhill?
a. No change in elevation
b. Slightly uphill
c. Slightly downhill
10. How much does the elevation change in feet?
a. 76 feet b. 109 feet c. 420 feet d. 5,556 feet
11. What is the gradient of your walk?
a. ~0.003 b. ~0.32 c. ~0.1 d. ~1.0
12. Examine the Yellowstone hotspot volcanic fields in Figure 3. Based on the ages of the volcanic
fields, in which direction is the North American plate moving?
a. northeast b. southwest c. northwest d. southeast
13. Using Google Earth, locate the Yellowstone Caldera in northwest Wyoming (search for 44 43 60 N,
110 41 60 W – you can mark this spot with a placemark using the yellow pushpin along the top bar).
Now search for the Picabo volcanic field by searching for 43 18 45 N, 114 2 11 W. Also put a placemark
here. Using the measure tool, determine the distance between these 2 locations in centimeters. What is
this distance?
a. 43,000,600 cm b. 60,460,000 cm c. 66,245,740 cm d. 29,638,043 cm
14. Using the age of 9.0 Ma for the Picabo volcanic field and 0 Ma for the Yellowstone Caldera, calculate
the speed at which the North American plate is moving over the Yellowstone hot spot.

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a. 4 cm/yr b. 0.2 cm/yr c. 3.29 cm/yr d. 41 cm/yr
15. Where was the Picabo volcanic field located when it was still active and erupting?
a. 41 51 1 N 118 2 12 W
b. 44 43 60 N 110 41 60 W
c. 42 31 48 N 106 25 43 W
d. 43 18 45 N, 114 2 11 W
16. Calculate the density of each of the 4 rocks in Figure 5. The rock that most closely resembles the
composition of continental plates based on the description in the previous section is:
a. A b. B c. C d. D
17. Based on the choice you made for question 16, what is the density of the rocks that make up
continental plates?
a. 2.80 g/cm3 b. 2.1 g/cm3 c. 2.99 g/cm3 d. 0.5 g/cm3
18. The rock that most closely resembles the composition of oceanic plates based on the description in the
previous section is:
a. A b. B c. C d. D
19. Based on the choice you made for question 18, what is the density of the rocks that make up oceanic
plates?
a. 2.11 g/cm3 b. 2.80 g/cm3 c. 0.50 g/cm3 d. 2.99 g/cm3
20. According to the geothermal gradient, rocks buried 80 km beneath the surface would
normally be at what temperature?
At 80 km depth, rocks will be heated to about _______ degrees Celsius
a. 1275 b. 1125 c. 1000 d. 750

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21. According to the geothermal gradient, rocks at 450 degrees Celsius will be buried how deep?
At 450 degrees Celsius, rocks will be buried to about _______ km depth
a. 22 b. 15 c. 20 d. 10
22. What happens when the lithosphere at point X is heated to 1900 °C?
a. no change b. starts to crystallize c. starts to melt
23. At which of the following depths will the dry mantle rock at point X begin to melt if its
temperature remains the same?
a. 18 km b. 55 km c. 70 km d. 60 km
24. Type “1 13 1.87 S 101 33 24.6 E” into the Google Earth Pro Search bar. What type of
tectonic plates are present?
a. Continent-Continent b.Ocean-Continent c. Ocean-Ocean
25. What type of plate tectonic boundary is present?
a. Transform b. Divergent c. Convergent