Gap Fill - Cold Air - Level 5


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   areas      atmosphere      buoyant      circumstances      degree      effect      principle      school      vapour      worse  

Paragraph 1

We learn at that warm air rises and cool air sinks. This is a basic of science. A study from the University of California found there are in which cool air rises. Researchers found that in tropical , cold air rises because of the lightness of water . In warm, humid climates, water particles become more and can help cool air rise. The lead researcher said: "Water vapour has a buoyancy which helps release the heat of the to space and reduce the of warming. Without this lightness...climate warming would be even ."

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