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WX 201 Ch. 8
Terms in this set (15)
In an aneroid barometer, a general rule is that the higher the reading, the more likely ____ weather will occur, and the lower the reading, the better the chances are for ____ weather.
In the tropics, pressure rises and falls in a regular pattern ____ a day.
The unit of pressure most commonly found on a surface weather map is
millibars or hectopascals.
Which pressure unit is most commonly used in aviation?
inches of mercury
The Coriolis force acts at a ____ degree angle to the wind.
The contour lines drawn on a 500 mb chart are lines of constant
A geostrophic wind is a wind that results from a balance between the ____ force and the ____ force.
Coriolis; pressure gradient
A station at an altitude of 900 m (about 3,000 feet) above sea level measures an air pressure of 930 mb. Under normal conditions, which of the values below do you think would be the most realistic sea level pressure for this station?
Surface winds blow across isobars at an angle and the pressure gradient force is balanced by the ____ force and the Coriolis force.
On an isobaric surface,
pressure is constant
There is always a strong pressure gradient force directed _________.
Which of the following instruments measures pressure?
The pressure gradient force is directed from higher pressure toward lower pressure
at all places on Earth
On an upper-level chart the wind tends to be
parallel to the isobars or contours.
The ____ force is an apparent force created by Earth's rotation.
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