Instructions: In the map below, you are looking down on three lithospheric plate
ID: 234937 • Letter: I
Question
Instructions: In the map below, you are looking down on three lithospheric plates. The darker plates (Plates 1 and 2) are moving in the direction indicated by the white arrows. Plate 3 is stationary (not moving). Plates 1 & 2 are denser than Plate 3. Thinking of relative plate motions, choose the appropriate letter(s) from the map to match the tectonic feature listed below. Be aware that not all letters may be useable as an answer.
a) Transform Plate Boundary
Select one:
a. A
b. B
c. C
d. D
e. E
f. None
b) Convergent Plate Boundary
Select one:
a. A
b. B
c. C
d. D
e. E
f. None
c)Island or Continental Volcanic Arc
Select one:
a. A
b. B
c. C
d. D
e. E
f. None
d) Divergent Boundary
Select one:
a. A
b. B
c. C
d. D
e. E
f. None
e) Shallow Focus Earthquakes
Select one or more:
a. A
b. B
c. C
d. D
e. E
f. None
f) Deep Focus Earthquakes
Select one:
a. A
b. B
c. C
d. D
e. E
f. None
g) Ocean Trench
Select one:
a. A
b. B
c. C
d. D
e. E
f. None
Explanation / Answer
a).
Answer: b. B
Explanation: From the figure, the plate 1 moves towards left and plate 3 is in stationary position. Hence, the transform plate boundary forms at the point B.
b).
Answer: d. D
Explanation: At point D, the plates 1 and 3 collide.
c).
Answer: a. A
Explanation: The high density volcanic plate 3 goes down the plate 1. During this process, volcanic arc should form at the point A.
d).
Answer: c. C
Explanation: At point C, the two plates move in opposite direction and form divergent plate boundary.
e).
Answer: a. A
Explanation: The high density volcanic plate 3 goes down the plate 1. During this process, the shallow focus earthquakes form at the point A.
f)
Answer: e. E
Explanation: The high density volcanic plate 3 goes down the plate 1. During this process, the deep focus earthquakes form at the point E.
g)
Answer: a. A
Explanation: Here, the high density volcanic plate 3 goes down the plate 1. During this process, oceanic trench forms at the point A.