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Stack #1539993
word | defination |
---|---|
air mass | an air mass is an immense body of air that is characterized by similar temperature and amounts or moisture at any given altitude. |
polar air mass | cold air mass that forms high latitude towards Earth's pole |
tropical air mass | warm air that forms in low latitudes |
continental polar | cold,dry |
maritime tropical | warm, heavy moisture, and usually unstable. heavy precipitation |
continental tropical | hot and dry air mass. begins in southwest united states and mexico when it move, very hot and drought like conditions in the great plains |
maritime polar | cold and high humidity. influence weather of northeast united states |
continental | forms over land, dry |
air masses | are classified by temperature and surface over which they form land or water |
front | boundary that separates2air masses |
warm front | forms when air moves into an area formerly covered by cooler air. light to moderate precipitation for extended time. |
cold front | forms when cold, dense air moves into a region occupied by warmer air. heavy precipitation and gusty winds; temperature decrease |
stationary front | position of the front does not move. gentle to moderate precipitation |
occluded front | active cold front overtakes a warm front. light precipitation for several days |
middle latitude cyclones | large centers of low pressure that generally travels form west to east cause stormy weather |
tornado | violent windstorm that take the form of a rotating column of air called a vortex. the center of a tornado is characterized by its low pressure |