What is the process called when a denser oceanic plate goes under a continental plate?

What is the process called when a denser oceanic plate goes under a continental plate?

• A. Subduction
• B. Erosion
• C. Deposition
• D. Uplift

Answer: (A)

The main concept here is plate tectonics at a convergent boundary: a denser oceanic plate sinking beneath a less dense continental plate. This movement, called subduction, happens as the oceanic plate dives into the mantle, creating features like deep trenches, volcanic arcs, and strong earthquakes along the boundary. Subduction is the precise term for one plate moving under another, which is why it’s the best answer. Erosion describes rocks wearing away by wind and water, not the deep-plate interaction. Deposition is the laying down of sediment. Uplift is the vertical rise of land, which doesn’t explain a plate diving beneath another.

The main concept here is plate tectonics at a convergent boundary: a denser oceanic plate sinking beneath a less dense continental plate. This movement, called subduction, happens as the oceanic plate dives into the mantle, creating features like deep trenches, volcanic arcs, and strong earthquakes along the boundary. Subduction is the precise term for one plate moving under another, which is why it’s the best answer. Erosion describes rocks wearing away by wind and water, not the deep-plate interaction. Deposition is the laying down of sediment. Uplift is the vertical rise of land, which doesn’t explain a plate diving beneath another.