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Study Notes for 3-2 TEST 1 • The type of weather associated with an low pressure system would be incoming _____ storms cloudy, chance of ______. 2 • Warm, moist air that moves ________ upward over a clouds mountain range most likely form _______. 3 • Precipitation that occurs when rain falls through a layer of freezing air close to ground sleet is known as _______. 4 • Winds in a _____ low pressure system that form in the Northern Hemisphere appear to rotate ________ counter clockwise when viewed from space. 5 satellites collect data over a very • Weather __________ broad area compared with surface weather instruments. 6 • Weather map symbols H and L indicate air _________ pressure centers. 7 • Water will change to a ____ gas if enough energy absorbed by liquid water. is _________ 8 • Air _______ masses move in the United States move west to east. from _____ 9 • Severe thunderstorms form when a _____ cold air moist air. mass comes in contact with warm, ______ 10 • ________ Doppler radar can provide the location, type and motion of precipitation to weather _____, forecasters. 11 • _______ Stages of a thunderstorm include cumulus, mature and dissipating. _______ 12 • Weather centers all over the world _________ exchange centers the data they collect with other ________. 13 • Storms along a ______ warm front produce large area, and are precipitation over a _____ sometimes violent. 14 • The type of air mass that forms in an area location where it forms. depends on the ________ 15 • An instrument that measures relative humidity with two identical thermometers is a _________________. psychrometer. 16 • Meteorologists use _________ computer models to help them make forecasts from data they have input into computers. 17 • If the barometer reading _____, falls a good storm is coming. hypothesis would be that a ______ 18 • An instrument used to measure air pressure is barometer a __________. 19 • A warm front occurs when warm air moves cold air. into ____ 20 • If you collect data for air temperature, pressure you are measuring humidity and air ________, ________. weather 21 • __________ Hurricanes begin when warm, moist air rises and the moisture condenses, releasing energy in the form of ______ latent heat. 22 • When an air mass moves rapidly ________ upward vapor temperatures fall and water ______ condenses. 23 • Clouds that often bring thunderstorms are cumulonimbus _____________. 24 • Doppler ______ radar can save lives by warning storm people of an approaching ______. 25 • States in the mid-central United States are tornados because the more likely to have _________ cold dry air from Canada contacts warm, _____ moist air from the Gulf of Mexico. 26 • A ________ tornado will follow a __________ haphazard path if it touches down. 27 • A cold front forms when a cold air mass warm air mass and lifts the overtakes a ______ warm air mass off the _______. ground 28 • Scientists use _______ colors and symbols to convey map information on a weather _____. 29 • A cloud whose name has the prefix ______nimbo or rain the suffix –nimbus is ____-producing. 30 • Doppler radar measures ___________ precipitation by waves off rain or snow. bouncing radio _______ 31 • Oceans have slow temperature ________ changes which stabilize the temperatures of air masses that form over them and cause towns near an ocean often to be ________ warmer in winter and cooler in summer than towns at the same latitude but located ______. inland 32 • Triangular shaped symbols colored _____ blue on a cold air weather map point the direction a _____ mass is moving. 33 • Hurricanes develop over _______ oceans because vapor and energy to the oceans add water ______ air mass. 34 • When ___ air pressure goes up temperature will down usually go ______. 35 • A low pressure system forms when warm air rises _____. 36 • An ___________ anticyclone forms as the air sinks and high pressure flows outward from a center of ____ which brings dry weather. The End