Shared Flashcard Set

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2-2, 2-3
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19
Other
7th Grade
04/30/2013

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Cards

Term
Air mass
Definition
Large body of air that has properties similiar to the part of the Earth's surface over which it develops
Term
Front
Definition
A boundary between two air masses of different density, moisture, or temperature.
Term
Tornado
Definition
Aa violent rotating column of air in contact with the ground
Term
Hurricane
Definition
A large, swirling, low-pressure system that forms over the warm Atlantic Ocean.
Term
Blizzard
Definition
A winter storm with winds 56 km/h, low temperature, and visibility less thatn 400 m.
Term
Meteorologist
Definition
A person who studies weather.
Term
Station model
Definition
A weathe rmap with many symbols.
Term
Isotherm
Definition
A line that connects points of equal temperature.
Term
Isobar
Definition
A line drawn to connect points of equal atmospheric pressure.
Term
Lighting
Definition
Current of electricity created by opposite electrical charges in clouds.
Term
Thunder
Definition
The sound of expanding air caused form the rapid heating of air from lighting.
Term
Thunderstorm
Definition
Storm that occurs in warm, moist air masses and along fronts.
Term
Occluded Fronts
Definition
a front that involves three air masses of different temperature, cool, cool, and warm.
Term
Stationary Fronts
Definition
A front where the boundary between the air masses stops advancing
Term
Warm front
Definition
warm air slides over colder air along a warm front, forming a boundary with a gentle slope. This usually causes wet weather
Term
Cold front
Definition
Warm air is suddenly lifted up over cold air , causing thunderstorms.
Term
The sections of a tornado are:
Definition
From bottom up: Dust envelope-main inflow- wall cloud- mid-level winds-rotating updraft- upper-level winds
Term
What kind of cloud is a thunderstorm.
Definition
A cumulonimbus cloud
Term
How hot can lighting reach?
Definition
30,000 C
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