The terms focus and epicentre are linked by the epicentre being found on the surface, directly above the focus.

Is my answer correct.

Geological Events - Writeacher, Tuesday, January 11, 2011 at 7:34pm
Mostly correct. But in earthquakes, it's not always true. Or are you dealing only with volcanoes?

Geological Events - Anonymous, Tuesday, January 11, 2011 at 7:51pm
How is it not true in earthquakes

2 answers

Read these carefully:

http://www.abag.ca.gov/bayarea/eqmaps/fixit/ch2/sld003.htm

http://en.wikipedia.org/wiki/Fault_(geology)
Notice the 3rd graphic on the right.
That explains everything, thanks