| A | B |
|---|
| the movement of water between the atmosphere and Earth's surface | water cycle |
| the process by which water molecules in liquid water escape into the air | evaporation |
| a measure of the amount of water vapor in the air | humidity |
| the temperature at which condensation begins | dew point |
| the percentage of water vapor that is actually in the air compared to the maximum amount of water vapor the air can hold at a particular temperature | relative humidity |
| has two thermometers, a wet-bulb and a dry-bulb thermometer | psychromotor |
| the process when molecules of water vapor in the air become liquid water | condensation |
