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                       o.      How is the pressure gradient described when the isobars are far apart?



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                       p.    What is the flow of air parallel; to the ground between a local warm air mass and


                          cool air mass called?



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                       q.    What is the jet stream?



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                       r.    What are the pressure systems that regularly move from one area of the earth to


                          another called?


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                       s.    What two characteristics does an air mass take from the region in which it is formed?


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