Winds - Local and Global

29 terms by sdechert

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wind

air moving from an area of high pressure to an area of low pressure

air pressure

the measure of the force with which air molecules push on a surface

anemometer

an instrument used to measure wind speed

wind vane

instrument used to measure wind direction

local wind

winds that blow over short distances; caused by the uneven heating of land and water examples are land and sea breezes

global wind

Winds that blow steadily from specific directions over long distances and caused by uneven heating of the earth which creates pressure differences

wind chill factor

Increased cooling caused by the wind.

sea breeze

movement of air from sea to land during the day when cooler air from above the water moves over the land, forcing the heated, less dense air above the land to rise

land breeze

movement of air from land to sea at night, created when cooler, denser air from the land forces up warmer air over the sea

equator

an imaginary circle around the middle of the earth, halfway between the North Pole and the South Pole

Coriolis effect

the way earth's rotation makes winds curve

doldrums

low pressure regions near the equator with little or no wind (calm winds)

horse latitudes

regions of high pressure and gentle winds at about 30 degrees north and south latitude.

latitude

the distance from the equator measured in degrees

trade winds

Prevailing winds that blow northeast from 30 degrees north latitude to the equator and that blow southeast from 30 degrees south latitude to the equator

prevailing westerlies

winds that blow west to east between 30 and 60 degrees in the northern and southern hemispheres; we live here

Polar easterlies

wind belts that extend from the poles to 60 degrees latitude in both hemispheres

jet stream

a narrow belt of strong winds that blow in the upper troposphere and directs storms in the United States

sinking cold air has this type of air pressure

high pressure

rising warm air has this type of air pressure

low pressure

the warm air at the equator is ________ dense than colder air found at the poles

less dense

Number of global wind types in Northern hemisphere

3 - trade winds, westerlies, polar easterlies

global wind that affects the United States

westerlies

global wind type that does not follow a set path

jet stream

Cold Air at the poles is _________ dense than the warm air at the equator

more dense

Cold air has __________ pressure than warm air

higher pressure

Warm air has ___________ pressure than cold air

lower pressure

warm air is less dense and

rises

cold air is more dense and

sinks

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