Air mass facts for kids
An air mass is a volume of air defined by its temperature and water vapor content. Air masses cover many hundreds or thousands of square miles. Colder air masses are called polar or arctic, while warmer air masses are called tropical.
Images for kids
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Different air masses which affect North America as well as other continents, tend to be separated by frontal boundaries
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Picture of cold front (left part of the image) moving over the Czech Republic
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Lake-effect snow bands near the Korean Peninsula
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See also
In Spanish: Masa de aire para niños
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Air mass Facts for Kids. Kiddle Encyclopedia.