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| Large body of air that takes on the characteristics of the area over which it forms. |
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| Exchange of heat or moisture with the surface over which an air mass moves. |
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| Average weather of a particular area |
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| Branch of Earth science that studies the air that surrounds our planet |
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| Deflects moving particles such as air to the right above the equator and the left below the equator. |
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| Boundary between two air masses of differing densities |
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| High-altitude, narrow, westerly wind band that occurs above large temperature contrasts and can flow as fast as 185 km/h. |
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| Global wind system that lies between 60 degrees latitude. |
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| Global wind system that flows at 30 degrees and 60 degrees north and south latitude. |
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| Global wind system that flows at 30 degrees north and south latitude. |
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| Weather instrument used to measure wind speed. |
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| Weather instrument used to measure air pressure. |
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| Weather instrument used to measure the height of cloud layers. |
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| Change in the wave frequency that occurs in energy. |
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| Weather instrument used to measure relative humidity. |
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| Balloon-borne weather instrument whose sensors measure air pressure, humidity, temperature, wind speed and wind direction. |
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| Weather instrument used to measure temperature that contains a column of mercury or alcohol. |
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| Weather forecast that compares current weather patterns. |
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| Weather forecast that uses numerical data. |
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| Line drawn on a weather map that connects points. |
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