Earthquake Information:

4. What do the terms "hypocenter" and "epicenter" refer to?

(1) Hypocenter: A hypocenter is the point within the Earth where an earthquake rupture starts.
(2) Epicenter: An epicenter is the point at the surface that lies directly above a hypocenter in the Earth.

* This diagram shows the position of a hypocenter and an epicenter.

What do the terms 'hypocenter' and 'epicenter' refer to?

 
 
3. What are "faults"?  5. What are the main types of seismic waves?