How does a Cold Front Form?

Answer

A cold front forms when a mass of cooler air replaces a mass of warm air. This results in the formation of rain and clouds, especially when the warmer air has high humidity.
Q&A Related to "How does a Cold Front Form?"
The most basic ingredients of all the Earth's weather, including cold fronts, are air masses. Air masses are large bodies of air that have uniform characteristics, namely their temperature
http://www.ehow.com/info_8661317_cold-front-formed...
Cold air moves under warm air and pushes it up
http://wiki.answers.com/Q/What+dose+a+cold+front+f...
A cold front forms when a cold air mass, which is very dense, collids with a warm air mass, which is lighter. The cold air mass lifts the warm air mass higher up, creating a front
http://answers.yahoo.com/question/index?qid=201303...
Answer A front forms when two or more air masses come in contact with each other. The front is usually a line where they meet.
http://wiki.answers.com/Q/how+is+a+front+formed
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