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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


an instrument used to measure wind speed

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

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 (high pressure) from the land moves out to sea to replace warmer rising air (low pressure) over the sea


an imaginary circle around the middle of the earth, halfway between the North Pole and the South Pole, 0 degrees latitude

Coriolis effect

the way earth's rotation makes winds curve


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.


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

prevailing westerlies

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


cold air is more dense and


during the day, land heats up _________ than water


during the night, land cools ___________ than water


air always moves from areas of _______ pressure to areas of ____________ pressure

from high pressure to low pressure

What causes wind

the unequal heating of the earth's surface causes differences in air pressure that results in wind

pressure belts occur about every ______ degrees latitude

30 degrees

type of air pressure found at the doldrums

low pressure

type of air pressure at the horse latitudes

high pressure

the doldrums are found at the _____________

equator or 0 degrees latitude

the horse latitudes are found at _____________

30 degrees North and South latitude

the type of air pressure found at the North and South pole

high pressure

the type of air pressure found at 60 degrees North and South latitude

low pressure

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