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Chapter 18 and 20 test
Study Guide
46
Environmental Studies
9th Grade
02/21/2013

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Cards

Term
Rain,snow,sleet, and hail are all examples of ______.
Definition
Precipitation
Term
Which term describes the conversion of a solid directly to a gas, without passing through the liquid state?
Definition
Sublimation
Term
The change of state from a gas to a liquid is called _____.
Definition
Condensation
Term
Air that has reached its water-vapor capacity is said to be ______.
Definition
Saturated
Term
Which of the following is NOT a process that lifts air?
Definition
Divergence
Term
Orographic lifting is associated with _____.
Definition
Mountains
Term
Which cloud type consists of globular cloud masses with a cauliflower structure?
Definition
Cumulus
Term
Which term is used to describe clouds of middle height?
Definition
Alto
Term
Which clouds are often associated with thunder and lighting?
Definition
Cumulonimbus
Term
Which type of precipitation consists of small clear-to-translucent ice particles?
Definition
Hail
Term
What type of cloud is associated with hail?
Definition
Cumulonimbus
Term
Maritime air masses form _____.
Definition
Over water
Term
Which air masses have the greatest effect on weather conditions in much of the United States?
Definition
cP and mT
Term
The boundary that separates different air masses is called a(n) _____.
Definition
Front
Term
The weather behind a cold front is dominated by which of the following???
Definition
Cold air mass
Term
Which gas is most important for understanding atmospheric processes?
Definition
Water Vapor
Term
The process by which water vapor changes directly to o solid is called?
Definition
Deposition
Term
The ratio of the air's water-vapor content to its capacity to hold water vapor same temperature is the _______.
Definition
Relative humidity
Term
Which cloud type is the best described as a sheets or layers that cover much or all of the sky?
Definition
Stratus
Term
Which cloud type is confined to the middle height range?
Definition
Altostratus
Term
Compared to clouds, fogs are____.
Definition
At lower altitudes
Term
Which of the following processes can produce either rain or snow?
Definition
The Bergeron process
Term
An immense body of air characterized by similar properties at any given altitude is known as a(n) ______.
Definition
Air mass
Term
Which two properties characterize an air mass?
Definition
Temperature and moisture
Term
Which type of air mass originates in northern Canada?
Definition
cP
Term
An mT air mass is best described as____.
Definition
Warm and wet
Term
A cT air mass is ______.
Definition
Hot and dry
Term
In Figure 20-1, which of the following is characteristic of the air mass labeled F?
Definition
Both a and c
Term
On a weather map, which type of front is shown by a line with semicircles extending from on side?
Definition
Warm
Term
What type of front forms when the surface position of the front does not move?
Definition
Stationary
Term
When an active cold front overtakes a warm front _____.
Definition
An occluded front forms
Term
The weather behind a cold front is dominated by which of the following?
Definition
Cold air mass
Term
What type of front usually produces several hours of light-to-moderate precipitation over a large region?
Definition
Warm front
Term
The greatest number of thunderstorms occur in the _______.
Definition
Tropics
Term
A rotating column of air is called a(n) ______.
Definition
Vortex
Term
Tornadoes are most frequent from
Definition
April to June
Term
Hurricanes are classified according to intensity using the
Definition
Saffir- Simpson scale
Term
What scale is used to measure tornado intensity
Definition
Fugita Tornad
Term
What isat a hurricane
Definition
A whirling cyclone that produces winds
Term
What is astorm surge
Definition
It is dome of water about 60 to 80 km wide that sweeps across the coast where hurricane eye moves onto land
Term
What is relative humidity
Definition
It is the ratio of the airs actual water vapor content compared with the amount of water vapor air can hold at that temperature and pressure
Term
What are the three
Definition
Stratus,
Term
Describe an mp air mass
Definition
wet and cold
Term
Where are the heaviest rains and fastest winds of a hurricane found
Definition
Eye wall
Term
Describe the formation of the four types of fronts and the weather associate with each
Definition
Warm front- light to moderate precipiation
Cold front- heavy precipation and gusty winds
Stationary front- gentle precipitation
Occluded front- forms when an active cold front overtakes
warm front- They light precipitation
Term
Describe the three basic types of clouds
Definition
Cirrus-high white and thin
Cumulus-rouded individual cloud masses
Stratus- form sheets or layers.
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