Question

Which type of plate is more dense, continental or oceanic? How do the densities of these two plates compare to the mantle?

Answer 1

hear you go

Most of the Earth's seismic activity (volcanoes and earthquakes) occurs at the plate boundaries as they interact. The top layer of the Earth's surface is called the crust (it lies on top of the plates). Oceanic crust (the thin crust under the oceans) is thinner and denser than continental crust.