Evaporative Cooling

Water displays great resistance to temperature change (high ____________ heat). Because water is cohesive, water heats up and cools down slowly compared to other liquids; a lot of energy is required to break hydrogen bonds and allow more movement associated with temperature increase. It also takes time for water molecules to form hydrogen bonds and cool down. This is important in maintaining stable temperatures in and around water habitats and within the bodies of organisms – that are made mostly of water!

Water has a high heat of ______________. The cohesiveness of ware slows down evaporation. Heat energy is used in breaking hydrogen bonds. This allows evaporative cooling in terrestrial organisms (sweating, panting, transpiration)