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When a mass of cold air collides with a mass of warm air, what happens?

User Wteuber
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Answer: They push against each other along a line called a front. When a warm air mass meets a cold air mass, the warm air rises since it is lighter. ... On the other hand, when a cold air mass catches up with a warm air mass, the cold air slides under the warm air and pushes it upward. As it rises, the warm air cools rapidly.

Step-by-step explanation:

User Jfrantzius
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