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18 - 20 Test
Study Guide
49
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
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 in of middle height?
Definition
alto
Term
Which clouds are often associated with thunder and lightning?
Definition
cumulonimbus
Term
Which type of precipitation consists of small clear-to-translucent ice particles?
Definition
sleet
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...
Definition
front
Term
The weather behind a cold front is dominated by a...
Definition
cold air mass
Term
Which gas is most important for understanding atmospheric processes?
Definition
water vapor
Term
The process of which water vapor changes to a solid is called...
Definition
deposition
Term
The ratio of air's water-vapor content to its capacity to hold water vapor at the same temperature is the...
Definition
relative humidity
Term
Which cloud type is best described as 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
alto-stratus
Term
Compared to clouds, fogs are...
Definition
at lower altitudes
Term
Which process 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 an...
Definition
air mass
Term
Which two properties characterizes an air mass?
Definition
temperature and moisture
Term
Which type of air mass originates in northern Canada?
Definition
mP
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, F =...
Definition
hot and dry & hot in the summer
Term
Which air mass is the source of much of the precipitation in the central and eastern US?
Definition
mT
Term
On a weather map, which type of front is shown by a line with triangular points on one side?
Definition
cold
Term
On a weather map, which type of front is shown by a line with semicircles extending from one side?
Definition
warm
Term
When an active cold front overtakes a warm front...
Definition
an occluded front forms
Term
Along a front, which type of air is always forced upwards?
Definition
warmer, less dense air
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...
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
Typhoon id another name for...
Definition
hurricane
Term
What scale is used to measure tornado intensity?
Definition
Fugita Tornado Intensity Scale
Term
What is a hurricane?
Definition
A whirling cyclone that produce winds of at least 119 kilometers/hour.
Term
What is a storm surge?
Definition
Ir is a dome of water about 60 to 90 km wide that sweeps across the coast where hurricane's eye moves onto land.
Term
What is relative humidity?
Definition
It is the ratio of the air's actual water vapor content compared with the amount of water vapor air can hold at the temperature and pressure.
Term
That are the three basic types of clouds?
Definition
Cirrus, Cumulus, Stratus
Term
What type of atmospheric conditions are associated with cumulus clouds?
Definition
Unstable
Term
Describe an mP air mass.
Definition
Maritime Polar; 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 associated with each.
Definition
Cold Front; heavy precipitation and gusty winds
Warm Front; light to moderate precipitation
Stationary Front; gentle precipitation
Occluded Front; forms when an active cold front overtakes a warm front (light precipitation)
Term
Describe the three basic types of clouds.
Definition
Cirrus - high, white, and thin (look like feathers)
Cumulus - individual cloud masses; flat bases; cauliflower structures
Stratus - form sheets or layers that cover much or all of the sky
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