What term describes the visual representation of a fault surface that has been exposed?

The term that describes the visual representation of a fault surface that has been exposed is "fault scarp." A fault scarp is created when a fault moves and causes a vertical offset along the Earth's surface. This often results in a step-like ridge that clearly shows the displacement caused by the faulting process. It provides geologists with valuable information about the size, direction, and movement of the fault.

A fault displacement refers specifically to the amount of movement along the fault, rather than the visual representation of that movement. A joint is a fracture in rock along which no significant movement has occurred, thus it does not represent fault activity. A dome, on the other hand, is a geological structure formed by the upward bulging of rock layers, which is unrelated to fault surfaces. Therefore, in terms of visual representation of a fault, a fault scarp is the most accurate term.