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15 Cards in this Set
- Front
- Back
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air mass
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A huge body of air that has similar temperature, humidity, and air pressure at any given height is called an air mass
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tropical
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Tropical, or warm, air masses form in the tropics and have low air pressure
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polar
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Polar, or cold, air masses form north of 50° north latitude and south of 50° south latitude
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maritime
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Maritime air masses form over oceans. Water evaporates from the oceans, so the air can become very humid
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continental
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Continental air masses have less exposure to large amounts of moisture from bodies of water. Therefore, continental air masses are drier than maritime air masses.
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front
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The boundary where the air masses meet becomes a front.
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occluded
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The warm air mass is cut off, or occluded, from the ground.
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cyclone
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A swirling center of low air pressure is called a cyclone, from a Greek word meaning “wheel.”
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anticyclone
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Anticyclones are groups of dry, high-pressure air.
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storm
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A storm is a violent disturbance in the atmosphere
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thunderstorm
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thunderstorm is a small storm often accompanied by heavy precipitation and frequent thunder and lightning.
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lightning
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Lightning is a sudden spark, or electrical discharge, as these charges jump between parts of a cloud, between nearby clouds, or between a cloud and the ground.
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tornado
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A tornado is one of the most frightening and destructive types of storms.
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hurricane
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A hurricane is a tropical cyclone that has winds of 119 kilometers per hour or higher.
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storm surge
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a “dome” of water that sweeps across the coast where the hurricane lands.
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