The velocities of seismic waves traveling from earthquake foci ____________.
A)are uniform throughout all layers of Earth
B)monotonically decrease with depth,at a consistent rate of deceleration
C)monotonically increase with depth,at a consistent rate of acceleration
D)generally increase with depth,occasionally making abrupt jumps termed seismic velocity discontinuities

Question

Quizplus · Accepted Answer

The velocities of seismic waves traveling from earthquake foci generally increase with depth, occasionally making abrupt jumps termed seismic velocity discontinuities. This is due to the changes in the physical properties of the Earth's layers, such as density and composition, which affect the speed at which seismic waves can travel through them. These abrupt jumps in seismic velocity are important in helping to distinguish between the different layers of the Earth's interior.

The Velocities of Seismic Waves Traveling from Earthquake Foci ____________