Final answer:
A reverse fault is caused by compression. In reverse faults, the hanging wall moves upwards. Reverse faults are formed during compression and shortening of the Earth's crust.
Step-by-step explanation:
A reverse fault is caused by compression. In reverse faults, the hanging wall moves upwards. Reverse faults are formed during compression and shortening of the Earth's crust. Normal faults, on the other hand, are formed during extension and the hanging wall moves down.