Why coastal cities have mild climate? Heat of fusion and vaporization Heat of fusion: the amount of heat required to convert 1g of solid to a liquid at its melting point Heat of vaporization: the amount of heat required to convert 1g of a liquid to a vapor at its boiling point H-bonds make the heat of fusion and heat of vaporization for water higher than for practically any other substances In summer, water evaporates from the surfaces of oceans and takes heat energy from the surrounding land. the nearby land mass is cooled In winter, water vapor condenses and releases heat to the surrounding> temperature of the surrounding air is raisedWhy coastal cities have mild climate? Heat of fusion and vaporization • Heat of fusion: the amount of heat required to convert 1g of solid to a liquid at its melting point. • Heat of vaporization: the amount of heat required to convert 1g of a liquid to a vapor at its boiling point. • H-bonds make the heat of fusion and heat of vaporization for water higher than for practically any other substances. • In summer, water evaporates from the surfaces of oceans and takes heat energy from the surrounding land. → the nearby land mass is cooled. • In winter, water vapor condenses and releases heat to the surrounding → temperature of the surrounding air is raised