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Atmospheric Science 1050
Final Exam Prep
50
Meteorology
05/13/2008

Additional Meteorology Flashcards

 


 

Cards

Term
A weather warning indicates that:
Definition
Hazardous weather is either imminent or occuring within the forcast area
Term
A weather watch would probably be issues for which of the following conditions:
Definition
there is a chance for tornadoes tomorrow
Term
An analysis is:
Definition
a surface or upper-level chart that interprets the present weather patterns
Term
Weather observations made by most countries of the world are share and distribute globally by international agencies:
Definition
true
Term
The least accurate forecast method of predicting the weather two days into the future during changeable weather conditions is usually the:
Definition
persistence forcast
Term
Weather forecast that predicts that the future weather will be the same as the present weather is called:
Definition
Persistence forcasting
Term
Which forecasting method assumes that weather systems will move in the same speed as they have been moving?
Definition
steady state (trend) forecast
Term
A persistence forecast could be quite accurate when:
Definition
you are positioned in the middle of a large, stationary air mass
Term
A forecast method that compares past weather maps and weather patters to those of the present is:
Definition
the analogue method
Term
The forecasting technique that produces several versions of a forecast model, each beginning with slightly different weather information to reflect errors in hte measurements is called
Definition
ensemble forecasting
Term
Which of the following is presently a problem with modern-day weather predicitons?
Definition
All of the above *See test
Term
The forecasting of weather by a computer is known as:
Definition
numerical weather prediction
Term
When making a forecast, a meteorologist typically examines:
Definition
surface charts
upper-air charts
radar displays
satellite imagery
ALL OF THE ABOVE
Term
Modern computer forecasting models have increasingly smaller grid spacing. This presents which of the following problems?
Definition
Much more computations are needed
Term
Lines connecting points of equal pressure change are called:
Definition
Isallobars
Term
All thunderstorms require:
Definition
rising air
Term
The initial stage of an ordinary thunderstorm is the
Definition
cumulus stage
Term
Ordinary thunderstorms only last about one hour and begin to dissipate when:
Definition
when the downdraft spreads throughout the cloud and cuts off the updraft
Term
An ordinary thunderstorm is a
Definition
Scattered or isolated storm that is not severe
Term
An ordinary thunderstorm is most intense during the ____ stage
Definition
Mature
Term
The most likely time for an ordinary thunderstorm to form is
Definition
Afternoon
Term
A supercell storm is
Definition
an enormous thunderstorm that lasts for several hours
Term
Severe thunderstorms are capable of producing
Definition
large hail
tornadoes
flash floods
All of the above
Term
In a severe thunderstorm, hail may:
Definition
fall from the base of the anvil
fall from the bottom of the could
be tossed out the side of the cloud
all of the above!!!
Term
A mesoscale Convective Complex is actually:
Definition
Individual thunderstorms that grow into a large, long-lasting weather system
Term
Thunderstorms which produce tornadoes:
Definition
have rotating updrafts
Term
The leading edge of a thunderstorms cold downdraft is known as a
Definition
gust front
Term
A small thunderstorm cloud with virga falling out of its base and blowing dust at the ground could warn of a severe hazard to an airplane because
Definition
this could indicate an intense downdraft or microburst
Term
A group of thunderstorms which develop in a line one next to the other, each in a different stage of development are called:
Definition
A multicell thunderstrom
Term
Squall lines generally do not form:
Definition
behind a cold front
Term
A line of thunderstorms that forms ahead of an advancing cold front is called a:
Definition
Squall line
Term
On a surface weather map, this marks the boundary where a warm, dry air mass encounters a warm, moist air mass:
Definition
dry line
Term
Most squall line thunderstorms form:
Definition
In advance of a cold front
Term
A HP supercell differs from a LP supercell based on the storms
Definition
precipitation amount
Term
Thunderstorms that move to the right of the winds aloft tend to
Definition
cut of the supply of humid air to thunderstorms to the north of them
Term
Many flash floods, including those that occupied Rapid City, South Dakota, and in Colorado's Big Thompson Canyon are the result of thunderstorms that
Definition
Move Slowly
Term
The region in the United States with the greatest annual frequency of hailstones is:
Definition
The Midwest
Term
The greatest annual number of thunderstorms in the United States occurred in:
Definition
Florida
Term
In the United States, dryline thunderstorms are most common
Definition
In the Great Plains
Term
A discharge of electricity from or within a thunderstorm is called
Definition
lightening
Term
In cloud-to-ground lightning, the stepped leader travels ______ and the return stroke travels ______
Definition
Downward, Upward
Term
A second surge of electrons that proceeds from the base of a cloud toward the ground during cloud to ground lightning is called a:
Definition
Dart Leader
Term
Definition
Term
The upper part of a thunderstorm cloud is normally______ charged, and the middle and lower parts are _____ charged
Definition
Positively, negatively
Term
The electrification of a cumulonimbous cloud appears to involve:
Definition
All of the above
Term
An important principle in the electrification of a cumulonimbus cloud is that
Definition
there is a transfer of positive ions from a warmer object to a colder object
Term
A cloud to ground lightning discharge will sometimes appear to flicker. This is because:
Definition
You are able to distinguish separate return strokes
Term
What would be the proper sequence of events in a lightning flash?
Definition
Stepped leader, return stroke, dart leader, return stroke
Term
You are generally safe inside an automobile during a lightning storm because:
Definition
the metal car body will carry the lightning current around the passengers inside
Term
Which of the following is the most accurate description of the principle of a lightning rod?
Definition
the lightning rod intercepts the lightning and safely carries the lightning current around the object it protects