Wallingford-Swarthmore School District



Maps, Air Masses, and FrontsWeather MapsDoppler Radar – gives us maps on precipitation and where it is moving.Satellites – gives us maps on _______________________________________ .Temperature, water vaporIsobars – lines on a weather map that connect lines of equal air pressure.“Isos baros” – equal _________________________________________National Weather Service/National Oceanic and Atmospheric Administration website:Besides radar and satellite maps, what are 2 other things you can find from this website?1. ____________________________________________________________________________2. ____________________________________________________________________________Air Masses - DefinedAn air mass is a large body of ________________ that has similar temperatures and moisture throughout.Can come from land (continental) or sea (maritime).___________________________________ air masses tend to come from the tropics. (Tropical)Cold air masses tend to come from north of the U.S. (Polar).Air Masses - TypesWe combine the moisture classification with the temperature classification to characterize the air masses.Continental Polar (cP) – dry and _____________________________________Continental Arctic (cA) - dry and very coldContinental Tropical (cT) – dry and warmMaritime Polar (mP) – ___________________________ and coldMaritime Tropical (mT) – moist and warmFill in the missing air masses in the circles.National Geographic Air Masses Video:When air masses meet, what do they create? ______________________________________________________________________________________________________________________What is a front?A front is the _____________________________ that forms between two different air masses.Fronts occur in the _______________________________________ latitudes because there are both warm and cold air masses there.Types of Fronts:_________________________________Cold_________________________________Draw the front symbols with the correct color using colored pencils.StationaryFront Symbols:Warm FrontA warm front occurs when a ________________________ air mass meets a cold air mass. The warm air mass overtakes the cold air mass because the warm, less dense air moves over the cold air and gradually replaces it.Brings ____________________________________ precipitationClear and warm when it is goneFill in the temperatures in the circles.Cold FrontCold air mass meets a warm air mass.The cold, more dense air moves _____________________________ the warm air mass and pushes it up.Moves ________________________________.Thunderstorms, heavy rain, or snowFill in the temperatures in the circles.Cold weather follows a cold front.Occluded FrontA faster moving cold air mass ___________________________________ a slower moving warm air mass and forces the warm air mass up.The cold air mass continues until it meets another cold air mass that is warmer.The cold air mass then forces this air mass to rise.It has cool temperatures and large amounts of _______________________________________.In other words, when a cold front catches up to a warm front. (A warm air mass sandwich :))Stationary FrontCold air mass meets a warm air mass and does not move much (it’s stationary).The weather similar to a ___________________________________________ front.Write what score you received on the Study Jams Quiz: ________________________________ ................
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