| A | B |
|---|
| vapor pressure | The pressure exerted by water vapor in the atmosphere |
| latent heat | energy released or absorbed during a phase change, such as a liquid to a gas, but with no temperature change involved |
| potential energy | stored energy or energy at rest as the result of its state or position |
| change of phase | change of a material through states of solid, liquid, and gas |
| kinetic energy | energy of action, motion, or at work |
| melting | changing from a solid to a liquid state by application of heat or pressure or both |
| freezing | pass from liquid to the solid state by loss of heat, as in water to ice |
| heat of fusion | amount of latent heat involved in melting or freezing |
| heat of vaporization | amount of latent heat involved in evaporation or condensation |
| specific heat | amount of heat necessary to raise the temperature of 1 gram of any substance, 1 degree Celsius, measured in calories; specific heat of water is 1; most other substances have specific heats of less than 1. |
| conduction | transfer of energy, usually heat, by contact from one atom to another atom within a liquid, gas or solid |
| convection | transfer of energy, due to differences in substances' densities, in gases and liquids |
| convection cells (currents) | circulatory motion in which heat energy is transferred from one place to another due to the density differences |
| radiational cooling | decrease in temperature at the Earth's surface caused by energy radiating back out into space |
| pressure "belts" | band of high or low pressure in the atmosphere caused by regions of rising or settling air. |
