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42 Cards in this Set
- Front
- Back
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decribe tropical air
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warm-low pressure
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describe polar
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cold-high pressure
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describe maritime
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humid-marine, come from over oceans
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describe continental
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dry-come from over continents.
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how does maritime tropical form?
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forms over oceans, bring hot humid weather in the summer, bring heavy rain or snow in the winter.
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how does maritime polar form?
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forms over icy cold north pacific and north atlantic oceans. Bring fog, rain and cool temps. to west coast.
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how does continental tropical form?
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Over a smaller area than other masses. form over southwest and northern Mexico.
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how does continental polar form?
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Forms over Northern Canada and Alaska. Bring bitterly cold dry and clear winter weather.
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what direction does Prevailing westerlies push air masses.
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Generally push air masses from north to west. (in the U.S.)
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what is a jet stream?
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jet streams are at high altitude, they blow from east to west.
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What are fronts?
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Where air masses meet and do not mix.
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what are all the types of fronts?
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cold fronts, warm fronts, stationary fronts, and occluded fronts.
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What is a cold front?
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Rapidly moving cold air approaching slowly moving warm air.
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What is a warm air front?
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Fast moving air that over takes slow moving air.
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What is a stationary front?
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cold and warm air masses meet, but neither one moves the other.
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what is a occluded front?
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when a warm air mass is caught in-between two colder air masses.
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what is a cyclone?
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a swirling center of low pressure.
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what is a anti cyclone?
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a high pressure center of dry air.
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how do thunder storms form?
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in cumulonimbus clouds.
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What is lighting?
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a sudden spark,or a electrical discharge.
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What is thunder?
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lighting heats this rapidly heating air explodes rapidly that is thunder.
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What is thunderstorm damage caused by?
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caused by winds, lighting, and heavy rain.
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What is a flood?
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what so much water pours into a stream or a river that its banks overflow.
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thunderstorm saftey
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avoid places where lighting may strike, and avoid places or things that are metal.
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how tornados form?
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most commonly in cumulonimbus clouds.
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Where does tornado alley occur?
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mostly in the great plain's.
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what is tornado safety?
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the safest place is a basement in a well built building.
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What is a storm surge.
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A "dome" of water of water that sweeps across the coast where the hurricanes land.
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How do hurricanes form?
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begings over warm water, as a low pressure area or a tropical disturbance.
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winds spiral inward
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the lower the air pressure at the center the faster the winds.
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how hurricanes move
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steered by winds
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hurricane safety.
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evacuate move away from the area.
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snow storm safety
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find shelter from the wind stay dry
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meteorologist
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scientist who study the causes of the weather.
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weather interpreting data
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using maps charts and computers to analyze data to prepare forecast.
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weather balloons
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carry instruments high into the troposphere and lower stratosphere.
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weather satellites
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collect data on temperature.
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automated weather stations
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collect data from the surface
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computer forcast
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help increase the accuracy of forecasting.
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isobars
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lines joining place on the map have the same (air) pressure.
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isotherms
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lines joining places that have the same temperature.
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news paper weather maps
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standard symbols even colors to show fronts.
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