18 & 20 TEST

Rain,snow,sleet,and hail are all examples of ?
Precipitation
Which term describes the conversion of a solid directly to a gas,without passing through the liquid state ?
sublimation
The change of state from a gas to a liquid is called ?
condensation
Air that has reached its water-vapor capacity is said to be ?
saturated
Which of the following is NOT a process that lifts air ?
divergence
Orographic lifting is associated with ?
mountains
Which cloud type consists of globular cloud masses with a cauliflower structure ?
cumulus
Which term is used to describe clouds of middle height ?
alto
Which clouds are often associated with thunder and lighting ?
Cumulonimbus
Which type of precipitation consists of small clear to translucent ice particles ?
sleet
What type of cloud is associated with hail ?
cumulonimbus
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 an ?
front
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 to a solid is called ?
deposition
The ratio of airs water-vapor content to its capacity to hold water vapor at that same temperature ?
relative humidity
Which cloud type is best described as sheets or layers that cover much or all of the sky ?
stratus
Which cloud type is confined to the middle height range ?
altostratus
Compared to clouds fogs are ?
at lower altitudes
Which of the following processes can produce either rain or snow ?
Bergeron process
An immense body of air characterized by similar properties at any given altitude is known as ?
air mass
Which two properties characterize an air mass ?
temperature and moisture
Which type of air mass originates in Northern Canada ?
cP
An mT air mass is best described as ?
warm and wet
A cT air mass is ?
hot and dry
In 20-1 which of the following is characteristics of the air mass labeled F ?
Hot and dry
Hot in summer
Which air mass is the source of much of the precipitation in central and eastern US ?
mT
On a weather map which type of front is shown by a line with triangular points on one side ?
cold front
What type of front forms when the surface position of the front does not move ?
stationary
When an active cold front overtakes a warm front ?
occluded front
Along a front which type of air is always forced upwards?
warmer,less denser air
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 ?
tropics
A rotating column of air is called ?
vortex
Hurricanes are classified according to intensity using the ?
saffir-simpson scale
Typhoon is another name for ?
hurricane
What scale is used to measure tornado intensity ?
fugita tornado intensity scale
What is a hurricane ?
A whirling cyclone that produce winds of at least 19 kilometers/hour
What is a storm surge ?
it is a dome of water about 60 t o80 km wide that sweeps across the coast where hurricane’s 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 the temperature and pressure
What are three basic types of clouds ?
Cirrus
Stratus
Cumulus
What type of atmospheric conditions are associated with cloud B
Cumulus-unstable
Describe mP air mass ?
Maratime polar- 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 associated with each
Warm front-light to moderate rain
Cold front-heavy rain,gusty winds
Stationary-gentle rian
Occluded-forms when an active cold front takes over a warm front,light rain
Describe three basic of clouds.
Cirrus-high,white and thin
Stratus-sheets or layers or covers much or all of the sky
Cumulus-rounded individual cloud masses,flat bases and cauliflower structures