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Air Pressure and Weather

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Presentation on theme: "Air Pressure and Weather"— Presentation transcript:

1 Air Pressure and Weather
L and H Hand Twist Model

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3 Low Pressure Wind Model
Air around a LOW pressure rises in a counter-clockwise rotation, moving in toward the center of the LOW. The winds around a LOW pressure always move in a counter-clockwise rotation in the Northern Hemisphere. As the air rises it expands, cools, and condenses into clouds.

4 High Pressure Wind Model
Air around a HIGH pressure FALLS in a clockwise rotation, moving away from the center of the HIGH. The winds around a HIGH pressure always move in a clockwise rotation in the Northern Hemisphere. As the air Falls it compresses, warms, and water vapor evaporates. Clouds disappear!

5 ADD THIS BOX

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