Multiple Choice
Volcanoes are present at convergent plate boundaries because
A) the plates rub together, causing friction and heat.
B) water is carried down with the subducting plate and causes the mantle to melt.
C) heat from the inner mantle travels up along the subducting plate.
D) decompression melting due to decreased pressure at the boundary causes the mantle to melt and rise into volcano formations.
Correct Answer:

Verified
Correct Answer:
Verified
Q58: All igneous rocks exhibit identical grain size.
Q59: What process forms rocks with porphyritic texture?<br>A)
Q60: A geologist looks at a piece of
Q61: What is an example of pyroclastic materials?<br>A)
Q62: Why are igneous rocks that consist of
Q64: Figure 4.22 <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5867/.jpg" alt="Figure 4.22
Q65: A scientist at a canyon notices observes
Q66: Despite their large size, batholiths are emplaced
Q67: Which of the following is not a
Q68: Many economically important metallic elements like gold