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WeatherDL
7th Grade Weather Vocabulary
Vocabulary Word | Definition |
---|---|
Air mass | a large body of air that has properties similar to the part of Earth's surface over which it develops |
Front | a boundary between two air masses of different density, moisture, or temperature |
Tornado | a violently rotating column of air in contact with the ground |
Hurricane | a large, swirling, low-pressure system that forms over oceans |
Blizzard | a winter storm that's winds are 56km/h, temperature is low, visibility is less than 400 m in falling or blowing snow, and if these conditions last 3 hours or more |
Meteorologist | a person who studies the weather |
Station Model | shows the weather conditions at a specific location on Earth's surface |
Isotherm | a line that connects points of equal temperature (iso=same, therm= temperature |
Isobar | a line drawn to connect points of equal atmospheric pressure |
Cold Front | occurs when colder air advances toward warm air |
Warm Front | forms when lighter,warmer air advances over heavier, colder air |
Occluded Front | involves three air masses of different temperatures—colder air, cool air, and warm air |
Stationary Front | occurs when a boundary between air masses stop advancing, may remain in the same place for several days |