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Air Masses and Fronts Set 1
Terms in this set (12)
Cold Air Mass
A cold air mass is more dense and has a high pressure; it has less room for moisture, more dry.
Warm Air Mass
Less dense, low pressure; it has more room for moisture, humid.
What is an Air Mass?
An area of air that has the same properties throughout.
What are the properties (characteristics) of air masses?
Temperature, hot or cold. Pressure, high or low. Moisture, dry or humid. (Temp and Moisture properties are used to name an air mass)
How do Air Masses get their properties?
From their source regions. If an air mass forms over an ocean, it will have more moisture. If the air mass forms over land, it will be drier.
Humid and cold
Humid and hot
Dry and cold
Dry and hot
How do air masses affect our weather?
When they bump into each other, a front occurs.
When a warm air mass catches up with a cold air mass, forming a warm front, the warm air slides over the top of the cold air, before pushing it away. What can be expected as the warm air rises over the cold air and moisture in the warm air condenses?
Clouds and long periods of steady rain
During a cold front, a cold air mass catches up to a warm air mass and pushes the warm air up quickly. What often happens along warm fronts?
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