Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Name Air Masses/Fronts 1. Base your answer to the following question on the weather map below, which shows a low-pressure system over the central United States. Isobars are labeled in millibars. Points A, B, C, and D represent locations on Earth's surface. The circulation of surface winds associated with this low-pressure system is A) B) C) D) clockwise and toward the center of the low clockwise and away from the center of the low counterclockwise and toward the center of the low counterclockwise and away from the center of the low 2. The air over the Equator generally rises because the air is A) B) C) D) dry and cool with low density moist and hot with low density moist and cool with high density dry and hot with high density 3. Winds are blowing from high-pressure to low-pressure systems over identical ocean surfaces.Which diagram represents the area of greatest windspeed? [Arrows indicate wind direction.] A) B) C) D) 4. Which map correctly shows the wind directions of the high-pressure and low-pressure systems? A) B) C) D) 5. A cross section of a weather front is shown below. Which symbol would be used to represent this front on a weather map? A) B) C) D) 6. The map below shows surface air temperatures, in degrees Fahrenheit, reported by weather stations in the north-central United States. Letter X represents an air mass moving in the direction shown by the arrow. A line marks a frontal boundary advancing in a southeasterly direction. Which weather-map symbols best represent air-mass X and the frontal boundary shown on the map? A) B) C) D) 7. Air masses are identified on the basis of temperature and A) B) C) D) type of precipitation wind velocity moisture content atmospheric transparency Base your answers to questions 8 through 10 on the weather map below, which shows a high-pressure center (H) and a low-pressure center (L), with two fronts extending from the low-pressure center. Points X and Y are locations on the map connected by a reference line. 8. Which map best shows the most probable areas of precipitation associated with these weather systems? A) B) C) D) 9. Which cross section best represents the fronts and air movements in the lower atmosphere along line XY? A) B) C) D) 10. Which type of front is located between Buffalo and Detroit? A) stationary B) warm C) occluded D) cold 11. Base your answer to the following question on the graph below, which shows air temperature, dewpoint, and present weather conditions for a 23-hour period at Dallas, Texas. The thunderstorm that occurred between 11 p.m. and 12 midnight was most likely the result of A) B) C) D) the arrival of a warm front the arrival of a cold front an increase in the difference between air temperature and dewpoint an increase in both air temperature and dewpoint 12. Which type of air mass is associated with warm, dry atmospheric conditions? A) cP B) cT C) mP D) mT 13. Base your answer to the following question on the weather map below, which shows the location of fronts and the temperature field on a given day in the United States. The passage of a cold front most recently influenced the weather of which two cities? A) Chicago and Boise C) Kansas City and Minneapolis B) Las Vegas and Salt Lake City D) Detroit and Cincinnati 14. Which type of air mass would most likely have low humidity and high air temperature? A) cT B) cP C) mT D) mP 15. The weather characteristics of air mass result primarily from its A) B) C) D) geographic origin size and shape rate of movement direction of movement 16. The diagram below represents a cross section of air masses and frontal surfaces along line AB. The dashed lines represent precipitation. Which weather map best represents this frontal system? A) B) C) D) 17. Which statement best explains why precipitation occurs at frontal boundaries? A) Cold fronts move slower than warm fronts. B) Cold fronts move faster than warm fronts. C) Warm, moist air sinks when it meets cold, dry air. D) Warm, moist air rises when it meets cold, dry air. 18. The weather map below shows two air pressure systems covering a large geographic area. Points A through D identify four locations on the map. At which location is precipitation most likely occurring? A) A B) B C) C D) D 19. An airmass originates with its center located at 25° N and 90° W. Based on the map, this air mass would be classified as A) cP B) mP C) cT D) mT Base your answers to questions 20 through 22 on the weather map below and on your knowledge of Earth science. The weather map shows a typical low-pressure system and associated weather fronts labeled A and B. The L indicates the center of the low-pressure system. A few New York State cities are shown. Symbols cP and mT represent different air masses. The wind direction at Utica and Rochester is shown on the station models. 20. Which map shows the regions that are most likely experiencing the precipitation associated with this weather system? A) B) C) D) 21. Which front symbols are drawn correctly, based on the air masses shown? A) B) C) D) 22. If this weather system is following a normal storm track, the center of this low is most likely moving toward which city? A) Buffalo B) Ithaca C) Utica 23. The diagram below shows how prevailing winds cause different weather conditions on the windward and leeward sides of a mountain range. D) Plattsburgh 24. Base your answer to the following question on The cross section below shows the direction of air flowing over a mountain. Points A and B are at the same elevation on opposite sides of the mountain. Clouds usually form on the windward sides of mountains because this is where air A) rises and cools C) sinks and cools B) rises and warms D) sinks and warms Compared to the air temperature and humidity at point A, the air temperature and humidity at point B are usually A) B) C) D) cooler and drier cooler and wetter warmer and drier warmer and wetter 25. In the diagram below, arrows represent air movement near an ocean coastline on a summer afternoon. Compared to the air over the ocean, the air over the land has a A) lower temperature and lower barometric pressure B) lower temperature and higher barometric pressure C) higher temperature and lower barometric pressure D) higher temperature and higher barometric pressure