An ordinary cell thunderstorm is a
Question options:
1) thunderstorm that does not produce lightning or thunder.
2) thunderstorm that has a tilted updraft and downdraft.
3) scattered or isolated storm that is not severe.
4) thunderstorm that does not prod
scattered or isolated storm that is not severe.
The initial stage of an ordinary cell thunderstorm is the
Question options:
1) mature stage.
2) dissipating stage.
3) cumulus stage.
4) multicell stage.
cumulus stage.
A group of thunderstorms which develop in a line one next to the other, each in a different stage of development, are called
Question options:
1) ordinary thunderstorms.
2) a thunderstorm cluster.
3) a multicell thunderstorm.
4) mature thunderstorms.
a multicell thunderstorm.
The downdraft in an ordinary cell thunderstorm is created mainly by
Question options:
1) the melting of snow in the anvil.
2) electrical attraction between the cloud and ground.
3) the release of latent heat as water in the cloud freezes.
4) evaporating r
evaporating raindrops that make the air cold and heavy.
The leading edge of a thunderstorm's cold downdraft is known as a
Question options:
1) downburst.
2) squall line.
3) gust front.
4) dry line.
5) microburst.
gust front.
Which of the following would you not expect to observe during the passage of a gust front?
Question options:
1) gusty winds
2) rising surface pressures
3) increase in temperatures
4) wind shift
increase in temperatures
A relatively narrow downburst, less than 4 kilometers wide, is called
Question options:
1) a microburst.
2) a funnel cloud.
3) a rain shaft.
4) a narrow burst.
5) a mesocyclone.
a microburst.
A line of thunderstorms that forms ahead of an advancing cold front is called a
Question options:
1) roll cloud.
2) squall line.
3) wall cloud.
4) gust front.
5) dry line.
squall line.
The greatest annual number of thunderstorms in the United States occurs in
Question options:
1) the Ohio valley.
2) the Central Plains.
3) the desert southwest.
4) Florida.
5) Texas.
Florida.
The most likely time for an ordinary cell thunderstorm to form is
Question options:
1) just after sunrise.
2) just before sunrise.
3) around midnight.
4) late afternoon
5) at noon.
late afternoon
The top of a thunderstorm is normally ____ charged, and the middle and lower parts are ____ charged.
Question options:
1) negatively, negatively
2) negatively, positively
3) positively, positively
4) positively, negatively
positively, negatively
You are generally safe inside an automobile during a lighting storm because
Question options:
1) the car's radio antenna will act as a lightning rod.
2) the rubber tires insulate you from the ground.
3) metal cars do not become electrically charged.
4) th
the metal car body will carry the lightning current around the passengers inside.
Thunder is caused by
Question options:
1) the collision between two thunderstorms with opposite electrical charge.
2) the rapid heating of air surrounding a lightning channel.
3) the explosion that occurs when + and - charge collide and neutralize each ot
the rapid heating of air surrounding a lightning channel.
Which of the following is the most accurate description of the principle of a lightning rod?
Question options:
1) the lightning rod acts to discharge the thunderstorm
2) the lightning rod intercepts the lightning and safely carries the lightning current a
the lightning rod intercepts the lightning and safely carries the lightning current around the object it protects
A tornado cloud that does not touch the ground is called
Question options:
1) a funnel cloud.
2) a wall cloud.
3) a roll cloud.
4) a mesocyclone.
a funnel cloud.
Which of the following factors is most important in determining the strength of a tornado?
Question options:
1) diameter
2) air temperature
3) duration
4) central pressure
central pressure
The Enhanced Fujita scale pertains to
Question options:
1) the size of a tornado producing thunderstorm.
2) the amount of hail that falls from a mature thunderstorm.
3) the size of the thunderstorm image on a radar screen.
4) the strength of a tornado.
the strength of a tornado.
If a tornado is rotating in a counterclockwise direction and moving toward the northeast, the strongest winds will be on its ____ side.
Question options:
1) southwestern
2) southeastern
3) northeastern
4) northwestern
southeastern
A hook-shaped echo on a radar screen often indicates
Question options:
1) a thunderstorm with very frequent lightning.
2) a developing hurricane.
3) the possible presence of a tornado-producing thunderstorm.
4) a rotating anvil cloud at the top of a thund
the possible presence of a tornado-producing thunderstorm.
A tornado-like event that forms over water is a
Question options:
1) mesohigh.
2) roll cloud.
3) microburst.
4) waterspout.
5) squall line.
waterspout.