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42 Cards in this Set
- Front
- Back
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Four major types of air masses influence the weather in North America |
Maritime tropical Continental Tropical maritime polar in continental polar |
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Tropical |
Or warm air masses form in the tropics and have low air pressure |
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Polar |
Or cold air masses form north of 50 degrees north latitude in south of 50 degrees south latitude have high air pressure |
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Air mass |
A huge body of air that has similar temperature humidity and air pressure at any given height |
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Maritime |
Air masses form over oceans |
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Continental |
Air masses form over land |
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Maritime tropical |
Warm humid air masses form over tropical oceans |
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Maritime polar |
Call humid air masses form over the icy cold North Pacific and North Atlantic oceans |
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Continental Tropical |
Hot dry air masses form mostly in summer |
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Continental polar |
Form over Central in Northern Canada and Alaska |
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In continental United States air masses are commonly moved by the |
Prevailing westerlies and jet streams |
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Prevailing westerlies |
Major wind belts over the continental United States push air masses from west to east |
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Jet streams |
Embedded within the prevailing westerlies high-speed winds Global from west to east |
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Fronts |
The boundary where the air masses meet |
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Colliding air masses can form four types of fronts |
Cold fronts warm fronts stationary fronts and includes fronts |
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Cold fronts |
A fast moving cold air mass overtakes a warm air mass |
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Warm fronts |
A warm air mass overtakes a slow-moving cold air mass |
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Stationary front |
Cold and warm air masses meet but neither can move the other |
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Oclleded fronts |
warm air mass in between two cooler air masses |
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Cyclones |
A swirling Center of low air pressure |
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Cyclones and decreasing air pressure are the associated with |
Clouds wind and precipitation |
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Anticyclones |
Are high-pressure centers of dry air |
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The decreasing air in an anticyclone generally causes |
Dry and clear weather |
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Storm |
A violent disturbance in the atmosphere |
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Thunderstorm |
A small storm often accompanied by heavy precipitation and frequent thunder lightning |
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Thunderstorms that form in large cumulonimbus clouds are also known as |
Thunderheads |
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Lightning |
A sentence parkour electrical discharge as these charges jump between parts of cloud between nearby clouds or between a cloud and the ground |
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During a thunderstorm avoid places where lightning May strike also avoid objects that can conduct |
Electricity such as metal objects in bodies of water |
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Tornado |
A rapidly whirling funnel-shaped Cloud that reaches down from a storm cloud to touch a surface |
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Tornadoes most commonly develop in |
Thick cumulonimbus clouds |
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The safest place to be during a tornado is |
In a storm shelter or the basement of a well-built building |
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Hurricane |
A tropical Cyclone that has Winds of Hunter and 18 kilometers per hour or higher |
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A hurricane begins over |
Warm ocean water has a low pressure area or tropical disturbance |
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Storm surge |
A dome of water that sweeps across the coast where hurricane lands |
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Evacuate |
Move away temporarily |
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If you were caught in a snowstorm |
Try to find shelter from the wind |
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Meteorologist |
Scientist who study the causes of weather and try to predict it |
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Meteorologist use maps charts and computers to analyze |
Weather data and to prepare weather forcasts |
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Technological improvements in gathering weather data and using computers have improved |
The accuracy of weather forecast |
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Isobars |
Alliance joining places on the map that have the same air pressure |
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Isotherms |
Why is joining places that have the same temperature |
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Standard symbols on weather maps show |
Find areas of high and low pressure types of precipitation and temperature |
