GEOLOGY

Detailed explanation-1: -The focus is the place inside Earth’s crust where an earthquake originates. The point on the Earth’s surface directly above the focus is the epicenter. When energy is released at the focus, seismic waves travel outward from that point in all directions.

Detailed explanation-2: -The point where an earthquake originates is called the seismic focus. It is also known as hypocenter.

Detailed explanation-3: -Earthquakes occur along faults, which are fractures between blocks of rock that allow the blocks to move relative to one another. Faults are caused by the bumping and sliding that plates do and are more common near the edges of the plates.

Detailed explanation-4: -The area of the fault where the sudden rupture takes place is called the focus or hypocenter of the earthquake. The point on the Earth’s surface directly above the focus is called the epicenter of the earthquake.