Lesson 14

High and Low Air Pressure

Clouds are just water droplets suspended in the air and to form there needs to be moisture in the air

Formed from:

• Conditions of low temperature and pressure
• In warm air mass- the water vapor in the air rises and cools off
• Change in pressure
• Changing phase from vapor to droplets

Clouds under go changes in pressure and temperature but the volume stays the same

-as pressure increases, the temperature also increases

Warm air rises

Low Pressure:

• Associated with fronts, storms, clouds, and precipitation
• Warm and cold air meets and the warm air rises which leaves behind low pressure (since there is low temp.)
• This low temperature brings cloudy and rainy weather

High Pressure:

• Clear skies
• Denser air is sinking, inhibiting rain and clouds

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