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Wind

Wind. Weather and Climate Unit. What is wind?. Wind is air in motion.  Two factors are necessary to specify wind: speed and direction. What causes the wind to blow?. As the sun warms the Earth's surface, the atmosphere warms too. 

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Wind

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  1. Wind Weather and Climate Unit

  2. What is wind? • Wind is air in motion.  • Two factors are necessary to specify wind: speed and direction.

  3. What causes the wind to blow? • As the sun warms the Earth's surface, the atmosphere warms too.  • Warm air, which weighs less than cold air, rises. Then cool air moves in and replaces the rising warm air. This movement of air is what makes the wind blow.

  4. Jet Streams • Jet streams are fast flowing, narrow air currents found in the atmosphere. • The main jet streams are located near the tropopause, the transition between the troposphere(where temperature decreases with altitude) and the stratosphere (where temperature increases with altitude).

  5. Global Wind Patterns • Danny and everyone do not write this down I have it printed for you!! The equator receives the Sun's direct rays. Here, air is heated and rises, leaving low pressure areas behind. Moving to about thirty degrees north and south of the equator, the warm air from the equator begins to cool and sink. Between thirty degrees latitude and the equator, most of the cooling sinking air moves back to the equator. The rest of the air flows toward the poles.

  6. How is wind helpful? • Wind is the fastest growing source of electricity in the world. It's often one of the least expensive forms of renewable power available. Some experts say it can sometimes be the cheapest form of any kind of power. Generating power from the wind leaves no dangerous waste products behind. Best of all, its supply is unlimited. 

  7. What are some different types of wind names? Many local wind systems have their own names. Here's a few!chinook-(easterly off the Rocky Mountains)santaana-(easterly towards Southern California )scirocco-(southerly from North Africa to southern Europe) mistral-(northwesterly from central France to Mediterranean)marin-(southeasterly from Mediterranean to France) bora-(northeasterly from eastern Europe to Italy) gregale-(northeasterly from Greece) etesian-(northwesterly from Greece) libeccio-(southwesterly towards Italy) 

  8. Beaufort Scale • The Beaufort scale is an empirical measure for the intensity of the weather based mainly on wind power. The scale was created by the British naval commander Sir Francis Beaufort around 1806.

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