Question

subduction occurs?
a. where crust is formed.
b. near transform boundaries.
c. at normal faults.
d. where crust is destroyed.

Explanation:

Subduction is a geological process where one tectonic plate moves under another and is forced into the mantle. This occurs at convergent plate boundaries where the denser plate is subducted (destroyed).

• Option A: Crust is formed at divergent boundaries (e.g., mid - ocean ridges), not at subduction zones.
• Option B: Transform boundaries are where plates slide past each other horizontally, not related to subduction.
• Option C: Normal faults are related to tensional forces in the crust (e.g., in rift zones), not subduction.
• Option D: Subduction involves the destruction of the crust as one plate is forced into the mantle.

Answer:

D. where crust is destroyed.