Which one of the following statements concerning foci and epicentres is correct?
A) The epicentre is at the surface directly above the focus where the earthquake initiates.
B) The earthquake starts at the focus and the rupture extends down to the epicentre.
C) The focus is the faulted point on the surface directly above the epicentre.
D) The fault first cracks at the epicentre and breaks through to the surface at the focus.

Question

Quizplus · Accepted Answer

The epicentre is the point on the Earth's surface directly above where the earthquake starts, which is known as the focus (or hypocenter). The focus is the actual location within the Earth where the earthquake rupture begins.

Which One of the Following Statements Concerning Foci and Epicentres