SOMEWHERE OVER THE RAINBOW Humidity

Humidity- the actual amount of water vapor in the air Capacity- the maximum amount of water vapor that can be present in air at a given temperature Relative Humidity- a comparison of the actual amount of water vapor in the air with the maximum amount of water vapor that can be present in air at a given temperature (given as a percent) rh = humidity x 100 capacity

Assuming the humidity remains constant: As the temperature increases the capacity and the relaive humidity increases decreases

Assuming the humidity remains constant: As the temperature decreases the capacity and the relative humidity decreases increases

Dew Point- is the temperature at which condensation occurs Saturation- is when the air is holding all the water vapor it can at a given temperature

The relative humidity when the air is saturated is % 100

When the air is very humid there is little room for more water vapor, therefore there will be little if any   When the air is very dry there is a great deal of room for more water vapor, therefore there will be a great deal of evaporation evaporation

When an object is wet and the water is evaporated the water must energy to evaporate the water and some of that energy comes from the object making the object gain cooler

When an object is warm and wet, the water can not be because the air is very humid, the water doesn’t energy to evaporate the water and the object remains and wet evaporated gain warm