The location on the surface of the Earth immediately above the origin of a fault is called the epicenter.

Here's why:

* Fault: A fracture in the Earth's crust where rocks have moved past each other.

* Origin: The point underground where the fault rupture starts.

* Epicenter: The point on the Earth's surface directly above the origin of the earthquake.

The epicenter is the point where the effects of an earthquake are usually felt most strongly.