Question

A deep ocean trench with parts A through D labeled. A: water and land meet. B: lithosphere layer below the ocean goes below land. C: volcano and mountains. D: lithosphere layer below land stops at lithosphere layer below ocean.
Look at the diagram and then answer the following questions.

The process shown in this diagram is
.

Letter A in the diagram indicates a
.

The oldest area in the diagram is
.

Answers

GPT-4o mini
The process shown in this diagram is **subduction**, as it depicts the interaction between oceanic and continental plates where one plate is being forced below another.

Letter A in the diagram indicates a **convergent boundary** or **plate boundary contact**, where the ocean water meets land.

The oldest area in the diagram is **likely the lithosphere layer below land (C)**, as continental crust is generally older than oceanic crust. Inland areas tend to have older geological formations compared to the younger oceanic crust that gets continually formed at mid-ocean ridges.