A fault in which the hanging wall moves down relative to the footwall is a?

This is true of normal faults. In thrust or reverse faults, the hanging wall moves up relative to the footwall and in strike slip faults, it moves horizontally relative to the footwall.

A normal fault.

A normal fault is a fault in which the hanging wall has moved downward relative to the footwall.

It is called a Normal Fault.

Normal Fault