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Air Pressure

Vocabulary terms

QuestionAnswer
force a push or a pull with a size and direction
pressure force on a given area
barometer instrument used to measure air pressure
mercury type of barometer that uses a liquid metal
aneroid type of barometer that contains a spring
millibar scientific unit for measuring air pressure
14.7 pounds per square inch the value for air pressure at sea level
inches of mercury everyday unit for measuring air pressure
28 to 31 the values for air pressure in inches
948 to 1050 the values for air pressure in millibars
up and counterclockwise air movement in a low pressure system
down and clockwise air movement in a high pressure system
isobar lines on a weather map connecting areas of equal pressure
fair weather type of weather in a high pressure system
stormy weather type of weather in a low pressure system
decrease Isobars _________ in value as you approach the center of a low pressure area.
increase Isbars __________ in value as you approach the center of a high pressure area.
4 mb The difference in value between two isobars.
snow, rain, sleet examples of precipitation
blue H symbol for a high pressure system
red L symbol for a low pressure system
 

 



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