Chapter 21 weather earth science – Flashcards
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Radiosonde
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A package of instruments that is carried aloft by a balloom to measure upper atmospheric conditions, including temperature, dew point, and wind velocity
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Hurricane
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A serve storm that develops over tropical oceans and whose strong winds of more than 120mph spiral in toward the intensely low pressure storm center
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Tornado
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Destructive, rotating column of air that has very high wind speeds and that maybe visible as a funnel-shaped cloud
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Maritime polar
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Air masses form over the North Pacific Ocean and are very moist, but they are not as cold as continental polar Canadian air masses
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Thunderstorm
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A usually brief, heavy storm that consists of rain, strong winds, lightning, thunder
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Continental tropical
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Warm and dry, form over the deserts of the southwestern u.s.
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Radar
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A system that uses reflected radio waves to determine the velocity and location of objects
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Anemometer
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An instrument used to measure wind speed
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Continental polar
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Cold and dry
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Maritime tropical
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Moist and warm, form over the warm water of the tropical Atlantic
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Air mass
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Large body of air throughput which temperature and moisture content are smaller
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Anticyclone
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Bring dry weather, because their sinking air does not promote cloud formation
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Station model
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A pattern of symbols that represents the weather at as particular observing station and that is recorded and weather map
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Warning
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When severe weather has been spotted or is expected within 24 hours
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Occluded fronts
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Front that forms when a cold air mass overtakes a warm air mass and lifts the warm air mass off the ground and over another air mass
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As lower layers of air are warmed, what happens to the air?
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The air rises
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What type of weather does an air mass usually bring with it?
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It's source region
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What are the different types of air masses?
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Maritime polar, maritime tropical, continental polar, continental Tropical
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What type of path does a tornado take?
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Haphazard
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What does a radiosonde measure?
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Upper atmospheric conditions, temperature, dew point, wind variety
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What tool do meteorologist use to solve mathematical equations and store data?
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Computers
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Why do scientist study upper atmospheric conditions?
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To track global weather patterns
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How are marine weather conditions monitored?
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Satellite instruments
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What do dropper radar and satellite images help create?
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Weather models
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Weather stations report data to who?
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Collection centers
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What types of weather have meteorologist tried to control with freezing nuclei?
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Rain, hail, and lightening
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What do the letters H and L represent on a weather map?
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H high pressure L low pressure
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What do meteorologist user supercomputers for?
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To understand weather
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How do scientist conveys information on weather maps?
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Colors and symbols
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What weather have meteorologist tried to control?
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Hurricanes
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Describe the storms associated with a warm front.
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Precipitation over a large area and can cause violent weather
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What attributes are shown by a station model?
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Current temperature, dew point, wind speed
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What type of air mass is associated with maritime tropical?
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Warm and moist
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What type of air mass originated in the u.s. Southwest?
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Continental tropical
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What type of air mass originates in the pacific or Atlantic Ocean?
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Maritime tropical
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How do scientist use computers to understand weather?
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Computers can store weather data form around the world and the data can be useful in forecasting weather changes
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How do weather stations communicate weather data?
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Through collection centers
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How is a weather map created?
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Data from collection centers is transferred onto weather maps
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What is lightening?
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Huge spark that travels within the cloud or between the loud and the ground, to equalize the electrical changes
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List eight types of weather data that are indicated by a station model?
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Cloud cover, wind speed, wind direction, wind conditions, temperature, dew point, and atmospheric pressure
