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15 Cards in this Set
- Front
- Back
Cloud |
a visible mass of condensed water vapor floating in the atmosphere, typically high above the ground. |
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dew point |
the atmospheric temperature (varying according to pressure and humidity) below which water droplets begin to condense and dew can form. |
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relative humidity |
the amount of water vapor present in air expressed as a percentage of the amount needed for saturation at the same temperature. |
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air mass |
a body of air with horizontally uniform temperature, humidity, and pressure. |
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cold front |
the boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system. |
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front |
the side or part of an object that presents itself to view or that is normally seen or used first; the most forward part of something. |
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occluded front |
a composite front produced by occlusion. |
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squall line |
a narrow band of high winds and storms associated with a cold front. |
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stationary front |
A stationary front is a pair of air masses, neither of which is strong enough to replace the other. On a weather map, this is shown by an inter-playing series of blue spikes pointing one direction and red domes pointing the other. |
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blizzard |
a severe snowstorm with high winds and low visibility. |
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cyclone |
a system of winds rotating inward to an area of low atmospheric pressure, with a counterclockwise (northern hemisphere) or clockwise (southern hemisphere) circulation; a depression. |
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heat wave |
a prolonged period of abnormally hot weather. |
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hurricane |
a storm with a violent wind, in particular a tropical cyclone in the Caribbean.a wind of force 12 on the Beaufort scale (equal to or exceeding 64 knots or 74 mph). |
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lake effect snow |
snow falling on the lee side of a lake, generated by cold dry air passing over warmer water, especially in the Great Lakes region. |
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lightning |
the occurrence of a natural electrical discharge of very short duration and high voltage between a cloud and the ground or within a cloud, accompanied by a bright flash and typically also thunder. |