Sec 3 WB 7.2 Answer

Question (1)(a)
X: Headland
Y: Bay

Question (1)(b)
Headlands and bays are formed by wave erosion where the coast is made of alternating bands of resistant rocks and less resistant rocks. The different rates of erosion on the rocks by the waves cause the coast to be eroded unevenly. The areas made up of less resistant rocks are eroded by the waves to form bays while the areas with more resistant rocks will protrude into the sea to form headlands.