What is the Mohorovičić discontinuity?

Question

A. The refraction of seismic waves
B. The measurement of the speed of seismic waves
C. The line where Earth’s layers go from solid to liquid
D. The boundary between the crust and the mantle

Answer 1

The Mohorovičić discontinuity, often referred to as the "Moho," is:

D. The boundary between the crust and the mantle

It marks the transition between the Earth's crust (the outer layer) and the underlying mantle, where there is a significant change in the composition and properties of the materials.