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c. The warmer air moves up over the cold and continues northward, ng an accumulation
of air in the northern part hemisphere.

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d. Regions of high pressure develop where the air lies over surfaces that are cooler than

surrounding areas, such as polar regions; and where air traveling from the equator to
the poles is forced to descend.

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e. Air moving outward from a "high" flows in a clockwise spiral around the 'high" center;
air moving into a "low" flows in center.
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f. These systems may influence local weather and be small enough to affect only one
airport, or large enough to affect an area of several thousand miles.
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g. They do not include large high-: and low-pressure systems called migratory highs and
lows that migrate from one area of the earth another.
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