Ch.6: Air Pressure Flashcards

0
Q

barometer

A

measures atmospheric pressure

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1
Q

️Pressure Gradient force

A

horizontal difference in temperature create horizontal difference in pressure, it establishes a force that causes air to move to a higher towrad lower pressure

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2
Q

station pressure

A

barometer reading at a particular location

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3
Q

sea level pressure

A

since pressure varies with alititudes the station must be corrected in order to compare them

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4
Q

contour lines

A

lines that connect points of equal elevation above sea level

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5
Q

isobars

A

lines of constant pressure

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6
Q

anticyclone

A

areas of high pressure

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7
Q

cycle

A

areas of low pressure

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8
Q

ridge

A

when hight contours bend strongly to north accompanied by warm weather

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9
Q

trough

A

when high contours bend strongly to south accompanied by cold weather

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10
Q

Corolis force

A

due to rotation of Earth causes wind to deflect to right of its independent path in Northern Hemisphere & lefts of its path in Southern Hemisphere

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11
Q

Pressure Gradient

A

its difference in pressure over distance

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12
Q

centripetal force

A

gradient wind blowing around a low pressure ceneter is constantly accelerating because it’s constantly changing direction

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13
Q

geostrophic wind

A

upper air winds that blow parallel to isobars at fairly constant speeding follows contours lines

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