What is between the crust and the mantle?
Mohorovicic Discontinuity or Moho
It was discovered by seismologist Andrija Mohorovicic. The Moho starts from the depth of
This was discovered when Andrija Mohorovicic noticed that there is a change in the movement of the seismic waves. The change in movement indicates that seismic waves move at a different composition of the Earth's layer and that is the Moho.