1. Air Pressure and Weather
L and H Hand Twist Model

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