Final answer:
A fault is a fracture through rocks that has had a significant amount of movement on them. Faults are characterized by the displacement of rocks on either side of the fracture. Different types of faults include normal faults, reverse faults, thrust faults, and strike-slip faults.
Step-by-step explanation:
A fault is a fracture through rocks that has had a significant amount of movement on them. It is not the same as a crack, fracture, or joint where no movement has occurred. Faults are characterized by the displacement of rocks on either side of the fracture. There are different types of faults, including normal faults, reverse faults, thrust faults, and strike-slip faults.