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39 Cards in this Set
- Front
- Back
consistent winds in the subtropics and tropics once used by ships sailing from Europe to the New World
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trade winds
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swollen, upper portion of a thundercloud
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thunderhead
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consistent winds blowing from the poles which bring cold, dry air to the northern part of North America
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polar easterlies
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a permanent low-pressure area along the equator caused by the rising of warm air
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doldrums
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an air mass that is warmer than the surface over which it moves
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warm air mass
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a transient, sometimes violent storm of thunder and lightning, often accompanied by rain and sometimes hail
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thunderstorm
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most common type of violent storm
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thunderstorm
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a breeze that blows from shore to sea, usually during the night
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land breeze
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tornado occurring at sea
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waterspout
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an air mass that forms over cold areas
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polar air mass
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the calm, clear area at the center of a hurricane
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eye
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advancing edge of a cold air mass
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cold front
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wind system that influences large climatic regions and reverses direction seasonally
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monsoon
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the arrangement when a cool air mass and a cold air mass trap a warm air mass between them, and then the warm air mass rises over the other air masses and loses all contact with the ground
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occluded front
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lightning formed when a stepped leader branches on the way to the ground
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forked lightning
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electrical discharge that occurs either between clouds or between a cloud and the ground
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lightning
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a huge body of air having relatively uniform temperature and humidity and covering hundreds or thousands of square kilometers
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air mass
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air mass that forms over an ocean
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maritime air mass
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leading edge of a warm air mass
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warm front
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metal rod attached to the highest point of a building's roof which can conduct lightning to the ground via metal conductor cables
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lightning rod
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boundary between air masses that do not mix
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front
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a low-pressure area formed at 60 degrees N when the prevailing westerlies rise above the polar easterlies
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subpolar low
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waves that break onto the shore several hundred kilometers ahead of a hurricane, giving the first sign of the approaching storm
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storm swell
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zone of contact between two dissimilar air masses, neither of which is displacing the other, and usually resulting in no weather change
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stationary front
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narrow, funnel-shaped cyclonic windstorm extending down from a cumulonimbus cloud
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tornado
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consistent winds blowing towards the poles from 30 degrees latitude
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prevailing westerlies
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barely visible lightning discharge that jumps in a series of steps from the cloud to the ground
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stepped leader
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line of violent thunderstorms that sometimes accompanies an advancing cold front
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squall line
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lightning discharge from the ground to the cloud
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return stroke
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an air mass that is colder than the surface over which it moves
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cold air mass
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a region with uniform temperature and humidity over which air masses form
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source region
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an air mass that forms over land
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continental air mass
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flashes of lightning from clouds too far away for the thunder to be heard
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heat lightning
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hurricane in the region of the Indian Ocean
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cyclone
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the effect of wind circling an area of low pressure, or a general term for any low-pressure area
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cyclone
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a breeze that blows from the sea to the shore, usually during the day
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sea breeze
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giant windstorms that form over the tropical oceans near the equator
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hurricanes
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an air mass that forms over warm areas
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tropical air mass
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permanent high-pressure areas caused by descending cold air and result in no horizontal wind, which is dangerous to sailing ships
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horse latitudes
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