GGR112H5 Chapter Notes - Chapter 7: Dew Point, Radiative Cooling, Altocumulus Cloud
Document Summary
Water is the most common compound on the surface of earth, and it possesses unusual solvent and heat characteristics. Owing to earth"s temperature position relative to the sun, water exists here naturally in all three states-solid, liquid, and gas. A change from one state to another is a phase change. The change from liquid to solid is freezing; from solid to liquid, melting; from vapour to liquid, condensation; from liquid to vapour, vaporization or evaporation; from vapour to solid, deposition; and from solid to vapour, sublimation. The heat energy required for water to change phase is latent heat because, once absorbed, it is hidden within the structure of the water, ice, or water vapour. For 1 g of water to become 1 g of water vapour by boiling requires the addition of 540 cal, or the latent heat of vaporization.
