Details Title: Atmospheric Science 1050 Description: Final Exam Prep Total Flash Cards: 50 Created: 05/13/2008 20:22:57		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Meteorology Flashcards
Cards in this set: Term A weather warning indicates that: Definition Hazardous weather is either imminent or occuring within the forcast area Term A weather watch would probably be issues for which of the following conditions: Definition there is a chance for tornadoes tomorrow Term An analysis is: Definition a surface or upper-level chart that interprets the present weather patterns Term Weather observations made by most countries of the world are share and distribute globally by international agencies: Definition true Term The least accurate forecast method of predicting the weather two days into the future during changeable weather conditions is usually the: Definition persistence forcast Term Weather forecast that predicts that the future weather will be the same as the present weather is called: Definition Persistence forcasting Term Which forecasting method assumes that weather systems will move in the same speed as they have been moving? Definition steady state (trend) forecast Term A persistence forecast could be quite accurate when: Definition you are positioned in the middle of a large, stationary air mass Term A forecast method that compares past weather maps and weather patters to those of the present is: Definition the analogue method Term The forecasting technique that produces several versions of a forecast model, each beginning with slightly different weather information to reflect errors in hte measurements is called Definition ensemble forecasting Term Which of the following is presently a problem with modern-day weather predicitons? Definition All of the above *See test Term The forecasting of weather by a computer is known as: Definition numerical weather prediction Term When making a forecast, a meteorologist typically examines: Definition surface charts upper-air charts radar displays satellite imagery ALL OF THE ABOVE Term Modern computer forecasting models have increasingly smaller grid spacing. This presents which of the following problems? Definition Much more computations are needed Term Lines connecting points of equal pressure change are called: Definition Isallobars Term All thunderstorms require: Definition rising air Term The initial stage of an ordinary thunderstorm is the Definition cumulus stage Term Ordinary thunderstorms only last about one hour and begin to dissipate when: Definition when the downdraft spreads throughout the cloud and cuts off the updraft Term An ordinary thunderstorm is a Definition Scattered or isolated storm that is not severe Term An ordinary thunderstorm is most intense during the ____ stage Definition Mature Term The most likely time for an ordinary thunderstorm to form is Definition Afternoon Term A supercell storm is Definition an enormous thunderstorm that lasts for several hours Term Severe thunderstorms are capable of producing Definition large hail tornadoes flash floods All of the above Term In a severe thunderstorm, hail may: Definition fall from the base of the anvil fall from the bottom of the could be tossed out the side of the cloud all of the above!!! Term A mesoscale Convective Complex is actually: Definition Individual thunderstorms that grow into a large, long-lasting weather system Term Thunderstorms which produce tornadoes: Definition have rotating updrafts Term The leading edge of a thunderstorms cold downdraft is known as a Definition gust front Term A small thunderstorm cloud with virga falling out of its base and blowing dust at the ground could warn of a severe hazard to an airplane because Definition this could indicate an intense downdraft or microburst Term A group of thunderstorms which develop in a line one next to the other, each in a different stage of development are called: Definition A multicell thunderstrom Term Squall lines generally do not form: Definition behind a cold front Term A line of thunderstorms that forms ahead of an advancing cold front is called a: Definition Squall line Term On a surface weather map, this marks the boundary where a warm, dry air mass encounters a warm, moist air mass: Definition dry line Term Most squall line thunderstorms form: Definition In advance of a cold front Term A HP supercell differs from a LP supercell based on the storms Definition precipitation amount Term Thunderstorms that move to the right of the winds aloft tend to Definition cut of the supply of humid air to thunderstorms to the north of them Term Many flash floods, including those that occupied Rapid City, South Dakota, and in Colorado's Big Thompson Canyon are the result of thunderstorms that Definition Move Slowly Term The region in the United States with the greatest annual frequency of hailstones is: Definition The Midwest Term The greatest annual number of thunderstorms in the United States occurred in: Definition Florida Term In the United States, dryline thunderstorms are most common Definition In the Great Plains Term A discharge of electricity from or within a thunderstorm is called Definition lightening Term In cloud-to-ground lightning, the stepped leader travels ______ and the return stroke travels ______ Definition Downward, Upward Term A second surge of electrons that proceeds from the base of a cloud toward the ground during cloud to ground lightning is called a: Definition Dart Leader Term Definition Term The upper part of a thunderstorm cloud is normally______ charged, and the middle and lower parts are _____ charged Definition Positively, negatively Term The electrification of a cumulonimbous cloud appears to involve: Definition All of the above Term An important principle in the electrification of a cumulonimbus cloud is that Definition there is a transfer of positive ions from a warmer object to a colder object Term A cloud to ground lightning discharge will sometimes appear to flicker. This is because: Definition You are able to distinguish separate return strokes Term What would be the proper sequence of events in a lightning flash? Definition Stepped leader, return stroke, dart leader, return stroke Term You are generally safe inside an automobile during a lightning storm because: Definition the metal car body will carry the lightning current around the passengers inside Term Which of the following is the most accurate description of the principle of a lightning rod? Definition the lightning rod intercepts the lightning and safely carries the lightning current around the object it protects