For the following questions refer to the temperature and dew point data in the following cities:
-Suppose the dew point of cold outside air is the same as the dew point of the indoor air. If the door is opened and cold air replaces some of the warm air, what is the new relative humidity indoors?
A)higher than before
B)the same as before
C)impossible to tell from the information given
D)lower than before

Question

For the following questions refer to the temperature and dew point data in the following cities: 
-Suppose the dew point of cold outside air is the same as the dew point of the indoor air. If the door is opened and cold air replaces some of the warm air, what is the new relative humidity indoors?
A)higher than before 
B)the same as before 
C)impossible to tell from the information given 
D)lower than before

Quizplus · Accepted Answer

When cold air (with the same dew point as the indoor air) replaces some of the warm indoor air, the relative humidity indoors increases. This is because cold air can hold less moisture than warm air, so when it warms up indoors, its relative humidity rises.

For the Following Questions Refer to the Temperature and Dew