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Ch.18 & 20 Review Question
Ch.18 &20 study guide
20
Environmental Studies
9th Grade
02/19/2013

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Cards

Term
If the water vapor content air remains constant, lowering air temperature causes what?
Definition
When the water-vapor content of air remains constant, lowering air temperature causes an increase in relative humidity, and raising air temperature causes a decrease in relative humidity
Term
What is true about warm, saturated air?
Definition
Warm saturated air contains more water vapor than cold air
Term
Compared to clouds, fogs are?
Definition
Clouds result when air rises and cools. Fog is a cloud with its base at or near the ground
Term
Air that has reached its water vapor capacity is said to be?
Definition
Saturated
Term
Hurricanes from in tropical waters between the latitudes of what?
Definition
5 and 20 degrees north and south latitude
Term
What type of front forms when the surface position of the front does not move?
Definition
Stationary front
Term
The process of converting a liquid to a gas is know as?
Definition
Evaporation
Term
The boundary that separates different air masses is called what?
Definition
Front
Term
What is the first sign of an approaching warm front?
Definition
The first sign is the appearance of cirrus clouds
Term
What kind of shape is associated with a middle-latitude cyclone?
Definition
Wave shape
Term
What is the dry adiabatic rate?
Definition
Rate of cooling or heating in unsaturated air
Term
A low cloud that blankets the sky and often generates precipitation is called an?
Definition
Nimbostratus
Term
Which terms is used to describe clouds of middle height?
Definition
Alto
Term
The process by which water vapor changes directly into a solid is called?
Definition
Deposition
Term
An immense body of air characterized by similar properties at any given altitude is know as?
Definition
Air mass
Term
Which of the following refers to the temp to which air would have to be cooled to reach saturation?
Definition
Dew point
Term
Water vapor makes up what fraction of atmospheric gases?
Definition
0 to 4 percent
Term
Which gas is the most important for understanding atmospheric processes?
Definition
Water vapor
Term
The ratio of air's water content to it capacity to hold water vapor at that same temperature is the?
Definition
Relative humidity
Term
Which of the following refers to the energy that is stored or released during a change of state of water?
Definition
Latent heat
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