WIND

By: Michelle Novikova

What is wind and what causes it?

Wind is the movement of air caused by differences in air pressure. The air will always move from an area of high pressure to an area of low pressure.
What is Wind?

LOCAL WINDS

Local winds are winds that blow over short distances. They are created by unequal heating of Earth's surface. Also, they are caused by the geographic features that produce temperature differences. They usually move in short distances and they blow in any direction.

TWO TYPES OF LOCAL WINDS, LAND AND SEA BREEZE

A land breeze only blows at the night time. It blows from the land towards a body of water. During this, the low pressure winds occurs over the ocean and the high pressure winds occurs over the land due to the uneven heating of Earth's surface. A sea breeze blows from a a body a water towards land. The high pressure winds are created over the ocean during the day. But the low pressure winds occur over the land due to the uneven heating. They always blow at the daytime.

GLOBAL WINDS

Global winds is a wind that blows steadily over short distances. They occur over a large area. It blows from the same direction every time. They are caused by the combination of pressure belts and the Coriolis effect. Makes the wind in the Northern Hemisphere curve to the right and opposite to the Southern Hemisphere.

HORSE LATITUDES

Horse Latitudes usually occur around 30 degrees north and south of the equator which is where the winds are very weak. Many deserts are located there on Earth because of the dry air. They are called this because crew mates threw horse off of their boat because of the lack of water. So in honor of this, it is call horse latitudes.
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TRADE WINDS

Trade winds are global winds that blow in the Northern hemisphere toward the equator from 30 degree north latitude. They are called this because of their use by early sailors.
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PREVAILING WESTERLIES

Prevailing westerlies are wind belts that blow between the 30 degree and 60 degree latitude in the Southern and Northern hemisphere.The winds flow west to east towards the poles, carrying moist air over the United States.
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Jet Stream

Jet Streams are narrow belts of high speed winds that blow in the upper troposphere and lower stratosphere. They help separate warm air from cold air.
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Winds Blow Song