How long do headlands and bays take to form?

Answer 1

The coastline was all once straight and didn't have bit sticking out like they do now, but because there are different parts to the coastline that has strips of less risisent rock (soft rock) and strips that are resisent rock (hard rock) in between each other, then the soft rock is going to wear away quicker when destuctive waves hit it. So when these waves hit the hard rock the rock is so strong that it is able to withstand the force of the waves. So.. this means all those headlands you see are there because it is a layer of hard rock ie, chalk, and the bay beside it was once covered in soft rock but like I said has eroded away because of continuous waves have been crashing against it.