What is a crumple zone of a car?

The term crumple zone is a part of the car that takes the majority of the engergy during an accident. The objective is to make the car safer during an accident. If you watch crash test videos you will see the car fold up in the front or where ever the impact is. But you will also see a lot of pieces of the car go fling all over the place. that is an exaple of a crumple zone. the vehicle is taking most of the impact