Table 16.1: (continued)90% 80% 70% 60% 50% 40%
95 oF 133 122 113 105 98
100 oF 142 129 118 109
105 oF 148 133 121
110 oF 135Since warm air can hold more water vapor than cool air, raising or lowering temperature
can change air’s relative humidity (Figure16.1). The temperature at which air becomes
saturated with water is called the air’sdew point. This term makes sense, because water
will condense from the air as dew, if the air cools down overnight and reaches 100% humidity.
Figure 16.1: This diagram shows the amount of water air can hold at different temperatures.
The temperatures are given in degrees Celsius. ( 25 )
Clouds
Sometimes there are lots of clouds in the sky and sometimes you can’t see a cloud anywhere.
Either way,cloudshave a big influence on weather. Clouds affect weather in three ways: (1)