Chapter 18 and 20 test

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