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Wind! What is Wind? Its simply moving air! What causes Wind? There are several factors… 2/16/2010.

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Presentation on theme: "Wind! What is Wind? Its simply moving air! What causes Wind? There are several factors… 2/16/2010."— Presentation transcript:

1 Wind! What is Wind? Its simply moving air! What causes Wind? There are several factors… 2/16/2010

2 Factors that Cause Wind… ALL wind is caused by warm air rising in one location, and cool air sinking nearby… We call these blobs of rising and sinking air Airmasses An Airmass is a “chunk” of air that has the same temperature and density. Wind is a direct result of a Convection Current thats created by the rising and sinking airmasses…

3 A Convection Current in the Atmosphere…

4 So what type of weather are those people experiencing? Person A Warmer Temperatures Clouds/Precip Low Air Pressure NO Wind! Person B Variable Temps P. Cloudy Skys Changing Air Pressure STRONGER WINDS! Person C Cooler Temps Clear Skies High Air Pressure NO Wind!

5 How Winds are Named… Winds are named based on where they are coming from, not where they are headed to… A Compass Rose…

6 Examples… A North West Wind (NW) An East Wind (E) A South East Wind (SE)

7 Name that Wind…

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