What are the characteristics we use to classify air masses?
Humidity and Temperature
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What is the boundary where two air masses meet?
A front
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As this front passes, winds become gusty. There is a sudden drop in temperature, and also heavy rain, sometimes with hail, thunder, and lightning. Atmospheric pressure changes from falling to rising at the front.
Cold Front
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These fronts often bring stormy weather as the warm air mass at the surface rises above the cool air mass, making clouds and storms.
Warm Front
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This front can cause rain that may persist for a few days.
Stationary Front
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What type of front occurs when a warm air mass is caught between two cooler air masses?
Occluded Front
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Any air mass that forms over the ocean is called...