Part 3: Adiabatic processes Here are some easy questions to get you going and gi
ID: 287419 • Letter: P
Question
Part 3: Adiabatic processes Here are some easy questions to get you going and give you some confidence! Decide whether the following statements are true or false and write T or F at the end of each statement. mark each! Question 6 a. Atmospheric temperature normally increases with height in the Troposphere. b. As the temperature of air increases, its ability to hold moisture increases. c. The density of air depends on its temperature - warm air is less dense than cooler air. d. Air warms up as it sinks. e. Saturated air sinks at the SALR f. Relative humidity decreases as saturated air continues rising. g. Air expands as it rises. h. Sinking air normally forms clouds.Explanation / Answer
a. False.
The temperature decreases as you go higher up in the troposphere. Typically, the temperature drops at about 6.5o C with an increase of 10km in altitude.
b. True
Equilibrium vapor pressure, the maximum amount of water that the atmosphere can hold, increases with the increase in moisture. This means that more water can evaporate into the atmosphere as the temperature increases and thus the humidity decreases with temperature.
c. True
Yes, the temperature and the air density are inversely proportional. As the air temperature increases, its density decreases.
d. True
A sinking air compresses and thus warms adiabatically. Meaning, it warms because of its own compression and not because of any external aid.
e. False
No matter whether the air is saturated or not, the air always warms at the Dry Adiabatic Lapse Rate (DALR). SALR is applicable only when the air is rising after saturation.
f. False
The relative humidity of the saturated air reaches 100% when it is saturated and remains at that even if it rises.
g. True
Yes, the air expands as it rises in altitude and therefore, it cools adiabatically.
h. False
As the air sinks, it gets compressed and it gets warm. Thus sinking air becomes capable of holding more water vapor, so clouds cannot form in sinking air and any water in liquid state, present in sinking air would begin to evaporate.
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