The subsurface area where the motion of seismic waves is initiated along the fault plane is called the
A) epicenter.
B) fault area.
C) Richter zone.
D) focus, or hypocenter.

Question

Quizplus · Accepted Answer

The term used to describe the subsurface area where the motion of seismic waves is initiated along the fault plane is known as the focus, or hypocenter. The epicenter refers to the point on the Earth's surface directly above the focus. The fault area and Richter zone are not commonly used terms in seismology.

The Subsurface Area Where the Motion of Seismic Waves Is