Ch. 12 (Moisture, Clouds, And Precipitation)

25 July 2022
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question
The change of state from a gas to a liquid is called ________.
answer
Condensation.
question
The term ________ is used to describe the conversion of a solid directly to a gas, without passing through the liquid state.
answer
Sublimation.
question
How can condensation be triggered to form clouds or fog?
answer
Cool the air to its dew point. Add sufficient water vapor to the air so that it reaches saturation.
question
Adiabatic temperature changes occur ________.
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When heat is neither added nor subtracted.
question
The most important process of cloud formation in the atmosphere is ________.
answer
Cooling by expansion of air.
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When warm moist air moves over a cold surface, ________ fog may result.
answer
Advection.
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________ is an indication of how near the air is to saturation rather than the actual quantity of water vapor in the air.
answer
Relative humidity.
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What two kinds of fog are the result of adding moisture to a layer of air?
answer
Steam and frontal.
question
"Frost" build up inside a household freezer is an example of which process?
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Deposition.
question
Rising air is ________ air.
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Unstable.
question
The Bergeron process operates only in warm clouds.
answer
False.
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When air sinks, it compresses and warms.
answer
True.
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Air that resists vertical motion is described as being stable.
answer
True.
question
Which of the following is NOT a physical mechanism that causes air to rise?
answer
Adiabatic cooling.
question
The opposite of sublimation is deposition.
answer
True.
question
Glaze is a consequence of advective fog.
answer
False.
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Hail is associated with cumulus clouds.
answer
False.
question
What unusual situation can occur in the absence of condensation nuclei?
answer
A relative humidity of more than 100%.
question
Clouds consist of ________.
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Either water droplets or ice particles.
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Which of the following is a cloud of vertical development?
answer
Cumulonimbus.
question
What is evaporation?
answer
The process of converting a liquid into a gas.
question
Describe vapor pressure.
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The part of the total atmospheric pressure that can be attributed to the water-vapor content.
question
The opposite of melting is condensation.
answer
False.
question
Describe deposition.
answer
The process by which water vapor changes directly to a solid.
question
Describe condensation.
answer
The process by which water vapor changes to a liquid.