Heat Transfer / Application of Convection

Boiling Water, how does the entire water becomes hot, its because of convection process. Thats why when water is heated at the bottom, the top part of the water will also becomes hot.

Best example of experiences the wind movement is on the beach. During the Day, land is hotter than the sea water, so air on the land is hotter, so air rises and air from the water region which is cooler breeze towards the land Where as during the night, sea is hotter than the land so air in the sea region is hotter so rise up and cooler air from the land region will breeze towards the sea