Question

which type of material becomes molten rock at subduction zones? light plates heavy plates continental crust new oceanic crust

Explanation:

At subduction zones, the denser (heavy) tectonic plates are forced beneath lighter plates. As the heavy plates descend into the mantle, the high - pressure and high - temperature conditions cause them to melt and form molten rock (magma). Continental crust is less dense and doesn't subduct easily to become molten rock at subduction zones. New oceanic crust is formed at mid - ocean ridges, not at subduction zones by melting to form magma.

Answer:

heavy plates