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Learn about different types of air masses, how air pressure affects weather conditions, wind speed and direction, and the impact of severe weather events. Discover how to measure atmospheric pressure with a barometer and the amount of water vapor in the air with a hydrometer. Identify different cloud types such as cirrus, cumulus, stratus, and cumulonimbus.
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air mass A body of air that has about the same temperature and moisture throughout
air pressure The force exerted by air in all directions on a given area
Wind speed How fast the wind is blowing
Wind direction The direction of the wind
drought Dry weather; a lack in rain
Severe weather Destructive weather events
Barometer Measures atmospheric pressure
hydrometer Measures the amount of water vapor in the air
cirrus Thin, white clouds wispy, feather-like edges
cumulus Round, puffy white clouds
stratus Flat bottomed, gray clouds
cumulonimbus Tall, dense and dark grey