To complete these problems, first read the chapter. When you are finished, go to LaunchPad and open the Exploring with Google Earth file for this chapter. Click on the “Workbook Problems” folder to “fly” to each of the problems listed below and answer the questions. Be sure to keep your “Borders and Labels” layer activated. Refer to Appendix 4 if you need help using Google Earth.
PROBLEM 12.1 This placemark falls in the Democratic Republic of the Congo. Note the string of long lakes north and south of the placemark.
Question
12.5
1. Given this location, and given what you have read in this chapter, what tectonic setting formed these lakes?
A.
B.
C.
D.
PROBLEM 12.2 Activate the Plate Boundaries overlay in this figure. This placemark highlights North America.
Question
12.6
1. What kind of continental margin is the West Coast of North America?
A.
B.
C.
Question
12.7
2. What kind of continental margin is the East Coast?
A.
B.
C.
PROBLEM 12.3 Keep the Plate Boundaries overlay activated to answer these questions.
Question
12.8
1. What is the name of this island group?
A.
B.
C.
D.
Question
12.9
2. What type of plate boundary runs through the placemarked island?
A.
B.
C.
Question
12.10
3. Given this plate boundary type, would you expect this island to be volcanically active?
A.
B.
Question
12.11
4. Normally, this type of plate boundary occurs where?
A.
B.
C.
D.
PROBLEM 12.4 This placemark falls in the far east of Eurasia. Keep the Plate Boundaries overlay activated to answer these questions.
Question
12.12
1. What is the name of region where the placemark is located? (Google Earth labels it to the north of the placemark.)
A.
B.
C.
D.
Question
12.13
2. What country is this?
A.
B.
C.
D.
Question
12.14
3. What type of plate boundary is found here?
A.
B.
C.
Question
12.15
4. What specific type of plate interaction is occurring here?
A.
B.
C.
D.
Question
12.16
5. Given this plate boundary type, would you expect this peninsula to be volcanically active?
A.
B.
PROBLEM 12.5 Keep the Plate Boundaries overlay activated to answer these questions. You will also need to activate the Large Earthquake History overlay in this folder if it is not already activated. This placemark lands on the Pacific plate.
Question
12.17
1. Based on your examination of the seafloor bathymetry and the plate boundary color from the Plate Boundaries overlay, what kind of plate boundary is this?
A.
B.
C.
Question
12.18
2. Which of the following statements best describes the pattern of earthquake depth westward from the placemark?
A.
B.
C.
D.
Question
12.19
3. What is the name for this earthquake pattern?
A.
B.
C.
D.
Question
12.20
4. Given this plate boundary type, would you expect this area to be volcanically active?
A.
B.
PROBLEM 12.6 Keep the Plate Boundaries overlay activated to answer these questions. You will also need to activate the Volcanic Chains overlay in this folder if it is not already activated. This placemark lands on the Pacific Plate.
Question
12.21
1. Note that the yellow pins show submerged features of increasing ages. Collectively, what is this submerged landform called?
A.
B.
C.
D.
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Question
12.22
2. What is the age of the oldest of these submarine landforms?
A.
B.
C.
D.
Question
12.23
3. Measure the distance from the placemarked island to the farthest dated submarine landform to the east. What is the approximate distance?
A.
B.
C.
D.
Question
12.24
4. What is the approximate average rate of plate movement per year for this area? (Divide the distance from question 3 by the oldest age of the seafloor near the coast. Multiply the result by 100,000 to get centimeters per year.)
A.
B.
C.
D.
Question
12.25
5. Is this calculated rate of plate movement absolute velocity or relative velocity?
A.
B.
PROBLEM 12.7 Keep the Volcanic Chains overlay from the previous problem active for this problem. This placemark falls on Midway, part of the Hawaiian Islands chain. Be sure to activate the two markers in the folder for this problem. (Note that the ages of the islands and seamounts are given in millions of years and that the error range of the radiometric dates is indicated by the ± symbol.)
Question
12.26
1. What is the age of Midway?
A.
B.
C.
D.
Question
12.27
2. Do the seamounts get older or younger as they trend to the west and north from Midway?
A.
B.
Question
12.28
3. Zoom out until you can see marker 2 to the northwest of the placemark. What is the maximum age of the seamounts at marker 2?
A.
B.
C.
D.
Question
12.29
4. Note that the seamounts hook north at marker 1. Which of the following best explains the cause of this pattern?
A.
B.
C.
D.
Question
12.30
5. Measure the distance between the island of Hawai‘i and the location at marker 2. (Use the Path function in the measuring tool so you can measure the crook in the island chain.) What is the approximate average annual rate of plate movement for this portion of the Pacific plate? (Divide the distance traveled by the oldest age of the seafloor near the coast. Multiply this result by 100,000 to get centimeters per year.)