Hottest part of the day is after 1:00p.m.

The graph below shows that the hottest time of day during a typical summer afternoon would be in the
mid afternoon, not at solar noon. Notice the temperature peaks around 4:30 pm.

As temperature increases, air pressure decreases.
As atmospheric moisture (humidity) increases, atmospheric pressure decreases.
Air pressure decreases with altitude.

Cooler and drier air generally exerts higher pressure. Warm, moist air generally exerts lower pressure.
Wind is the result of pressure differences.
Wind blows from high to low pressure.
Wind is named for the direction that it is coming from.
The closer the air temperature is to the dew point the greater the chance for precipitation.
Weather moves from west to east in the United States.

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Note: To access the practice regent’s questions, your browser must support pop-ups. Teachers: To link to this section of the site simply cut and paste the URL into a link onto your page ( Printable black and white copy of just the key terms without the illustrations.

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