GCSE AQA Geography How do bays and headlands form?

To sart the basics -

Bays like Luworth cove near Swange for because there are bands of soft and hard rock on the coast , and because they soft rock erodes faster than the harder rock you get a curved coastline .

But there is more to this than first meets the eye a wave could attacking face on ( a pacific coastline ) or at a 90 degree angle from the coast and this will result in the diffraction of waves because  they have to bend around the coastline this wave attack will then produce a lot of sediment from the wearing away of both the soft and hard rock , friction slows the waves if they go round the coast to attack the rock at 90 degrees

when the start of the bay forms you  get…