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Chapter 18 and 20
Study guide
20
Environmental Studies
9th Grade
02/19/2013

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Cards

Term
If the water vapor content of air remain constant, lowering air temperature cause what?
Definition
When the water-vapor content of air remains, lowering air temperature cause an increase in relative humidity, and raining air temperature cause a decrease in relative humidity.
Term
What is true about warm, saturated air?
Definition
Warm saturated air contain more water vapor than cold air.
Term
Compare to clouds, fogs are?
Definition
clouds result when air rises and cool. 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 form in tropical waters between the latitude 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 in known 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 blanket the sky and often generates precipitation is called an?
Definition
Nimbostratus
Term
which term 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 characterize by similar properties at any given altitude is known 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 make up what fraction of atmosphere gases?
Definition
0 to 4 percent
Term
which gas is the most important for understanding atmosphere processes?
Definition
water vapor
Term
the ratio of air's water vapor content to it capacity to hold water vapor at the 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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