Question

Which is caused by the difference in density of oceanic and continental plates?(1 point)
Responses

rift valleys
rift valleys

hotspots
hotspots

pyroclastic flows
pyroclastic flows

subduction

Answer 1

Which processes are important in the formation of volcanic arcs at the edge of continental plates? Select the two correct answers.(1 point)
Responses

subduction
subduction

passing over a hotspot
passing over a hotspot

plate divergence
plate divergence

uplift

Answer 2

The correct response is **subduction**. Subduction occurs when an oceanic plate, which is denser, plates beneath a less dense continental plate, leading to various geological processes including the formation of trenches, volcanic activity, and earthquakes.

Answer 3

The two correct answers are:

1. **subduction**
2. **passing over a hotspot**

Subduction of an oceanic plate beneath a continental plate leads to the formation of volcanic arcs, while passing over a hotspot can also create volcanic activity, although it is not directly related to the edge of continental plates. Plate divergence is associated with the formation of new crust at mid-ocean ridges, and uplift generally refers to the raising of land, which isn't a direct process in arc formation.