which statement accurately describes one aspect of plate tectonics that involves subduction and seafloor…

which statement accurately describes one aspect of plate tectonics that involves subduction and seafloor spreading? older crust is melted at subduction zones. crust is created at the coastlines of continents. continents do not move as a result of seafloor spreading and subduction. crust is created as the mantle hardens under the lithosphere.

which statement accurately describes one aspect of plate tectonics that involves subduction and seafloor spreading? older crust is melted at subduction zones. crust is created at the coastlines of continents. continents do not move as a result of seafloor spreading and subduction. crust is created as the mantle hardens under the lithosphere.

Answer

Brief Explanations:

  1. Subduction: In subduction zones, the denser oceanic crust is forced beneath the less - dense continental or other oceanic crust. As it descends into the mantle, the older crust is subjected to high temperatures and pressures, causing it to melt.
  2. Seafloor spreading: New crust is formed at mid - ocean ridges due to the upwelling of magma from the mantle.
  • Option B is incorrect because crust is not created at continental coastlines in the context of subduction and seafloor spreading.
  • Option C is incorrect as continents do move as a result of these processes.
  • Option D is incorrect as crust is created at mid - ocean ridges (seafloor spreading) not as the mantle hardens under the lithosphere in the relevant context.

Answer:

A. Older crust is melted at subduction zones.