3. Air Temperature and Dew point temperature for three cities are listed below.
ID: 105727 • Letter: 3
Question
3. Air Temperature and Dew point temperature for three cities are listed below. Remember air temperature is related to what the humidity must be for the air to become saturated and dew point is the temperature to which the air must be cooled to become saturated. Air temperature is closely related to saturation humidity and dew point is most closely related to actual humidity in the air.
City
Air Temp
Dew-point Temp
City A
20 °C
0 °C
City B
30 °C
20 °C
City C
40 °C
15 °C
a.Which city has the largest relative humidity? ANS ______________
b. Which City has the lowest relative humidity? ANS _____________
c. Which city has the greatest amount of water vapor in the air? ANS _____________
d. Which city has the least amount of water vapor in the air? ANS _____________
City
Air Temp
Dew-point Temp
City A
20 °C
0 °C
City B
30 °C
20 °C
City C
40 °C
15 °C
Explanation / Answer
City A has relative humidity of 26.18
City B has relative humidity of 55.08
City C has relative humidity of 23.08
So, Answer a ) City B has the largest relative humidity
Answer b) City C has the lowest relative humidity
Since relative humidity = actual vapor density/ saturation vapor density *100
so, Answer c) City B has the greatest amount of water vapor in air
Answer d) City C has the least amount of water vapor in air
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