Seismic waves show a sudden increase at the Mohorovicic discontinuity because the
A)mantle material is so much hotter than the crust.
B)composition of minerals on both sides of the layer is different.
C)mantle is so much thicker than the crustal layer.
D)mineral structure is different in this layer than in crustal rock.

Question

Quizplus · Accepted Answer

The Mohorovicic discontinuity, or Moho, marks a significant change in the composition of minerals between the crust and the mantle, leading to a sudden increase in seismic wave velocities.

Seismic Waves Show a Sudden Increase at the Mohorovicic Discontinuity