1. Relative Humidity

3. Humidity  the measure of the amount of water in the air  high humidity =lots of moisture in the air

4. Saturated  when the air is holding the maximum amount of moisture that it can hold at a particular temperature  warm air can hold more water vapor than cold air

5. Absolute Humidity  actual amount of water vapor in a given volume of air (g/mL)

6. Capacity  The maximum amount of water vapor the air can hold at a specific temperature

7. Relative Humidity  how much water vapor is in the air compared to its capacity at a specific temperature

9. Psychrometer/Hygrometer  instrument used to measure relative humidity  contains both a wet and a dry bulb thermometer

10. Dew Point  Temperature to which the air would have to be cooled to make the relative humidity 100%  condensation can begin at this temperature

11. Dew Point  if below freezing, water will go from vapor to ice crystal  the higher the temperature the more moisture it takes to reach the dew point  In general –High dew points= high humidity –Low dew points= low humidity