How are the focus and the epicenter of an earthquake different?

The focus is underground, where the two faults are sliding. The epicenter is the spot above ground, where the quake has the most power.

The focus is the point underground where the earthquake rupture started, and the epicenter is the point on the ground directly above the focus.

earthquake

Suppose you're at a extinct volcano with a steep sides.The ground is mostly ash and small pieces of rock.What Type of valcano is this?

The focus of an earthquake is the point along a fault at which the first motion of an earthquake occurs. The epicenter of an earthquake is the point on Earth's surface directly above an earthquake's...