| Lesson
Content
This lesson focuses on the forces that cause the wind; and pressure
and altimetry.
Setting
your Altimeter
Surface pressure is always changing. Thus the altimeter reference
is necessary. Increasing the altimeter setting will cause the indicated
altitude to increase.
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Magnitude
and Direction of Forces
Weather results from the interaction of many forces. When discussing these
interactions we are concerned with the direction and magnitude, or strength,
of the force exerted on an object.
There are different forces that act to move air in a horizontal direction:
pressure gradient force, Coriolis force, friction, and centripetal force.
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The
many altitudes
There
are four 'altitudes' with which you should be familiar:
* Indicated Altitude
* Density Altitude
* Pressure Altitude
* True Altitude
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