Answer:
Whitecap is a physical property of surface water. It can be observed in a sea or lake. But the profound effect is seen in a sea. A water body forms a crest of foam over it's surface called as whitecap. It is formed by the ripples of waves that are produced by the wind. The stronger the wind the more it exert force to the surface layer of water. It is like a mechanism of washing machine. The water in the water body churns up foam on it's surface.