Pressure System Circulation

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Pauline McGee
6 years ago
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1 NAME 1. Base your answer to the following question on the surface weather map shown below. The map shows weather systems over the United States and weather station data for cities A, B, C, and D. Note that part of the weather data for city C and all of the weather data for city E are missing. The pressure field (isobars) on the map has been labeled in millibars. Pressure System Circulation 3. If a low-pressure system follows a typical storm track across New York State, it will move toward the northeast northwest southeast southwest 4. In which direction do surface winds around lowpressure centers in the Northern Hemisphere generally move? clockwise, away from the center of the low clockwise, toward the center of the low counterclockwise, toward the center of the low counterclockwise, away from the center of the low 5. Which map best represents the surface wind pattern around a Northern Hemisphere high-pressure center? If this low-pressure center has followed a normal storm track, which map shows its most likely path over the last two days? 2. In the Northern Hemisphere, in which direction does surface wind circulate in a high-pressure air mass? counterclockwise and away from the center counterclockwise and toward the center clockwise and away from the center clockwise and toward the center Version 1 Page 1 Barnard

2 6. In which map does the arrow show the general direction that most low-pressure storm systems move across New York State? 9. A low-pressure system in the Northern Hemisphere has a surface air-circulation pattern that is counterclockwise and away from the center clockwise and toward the center clockwise and away from the center counterclockwise and toward the center 10. Which map view best represents the pattern of isobar values, in millibars, and the pattern of wind flow, shown by arrows, at Earth s surface surrounding a Northern Hemisphere low-pressure center? 7. Base your answer to the following question on the weather map below which shows part of the United States. Letters A through E represent weather stations. If the low-pressure center follows a normal storm track, it will move toward the southwest northeast southeast northwest 8. Which diagram below best represents the air circulation around a Northern Hemisphere low-pressure center? 11. The surface winds in a typical Northern Hemisphere high-pressure system are generally moving clockwise toward the high-pressure center counterclockwise away from the high-pressure center counterclockwise toward the high-pressure center clockwise away from the high-pressure center Version 1 Page 2 Barnard

Points A, B, C, and D represent locations on Earth's surface. 12.

3 Base your answers to questions 12and 13on 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. 12.Which map shows the most likely path this low-pressure center will follow during the next 12 hours? Version 1 Page 3 Barnard

13.The circulation of surface winds associated with this low-pressure system is counterclockwise and toward the center of the low counterclockwise and away from the center of the low clockwise and

4 13.The circulation of surface winds associated with this low-pressure system is counterclockwise and toward the center of the low counterclockwise and away from the center of the low clockwise and toward the center of the low clockwise and away from the center of the low 14. In the Northern Hemisphere, in which direction does surface wind circulate in a high-pressure air mass? clockwise and away from the center counterclockwise and toward the center clockwise and toward the center counterclockwise and away from the center 15. In the Northern Hemisphere, what is the direction of surface wind circulation in a low-pressure system? counterclockwise and toward the center clockwise and outward from the center counterclockwise and outward from the center clockwise and toward the center Version 1 Page 4 Barnard

5 16. Base your answer to the following question 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. If this weather system is following a normal storm track, the center of this low is most likely moving toward which city? Utica Buffalo Plattsburgh Ithaca 17. Which diagram correctly represents the air circulation in a Northern Hemisphere high-pressure airmass? 18. Which map view best shows the movement of surface air around a low-pressure system in the Northern Hemisphere? Version 1 Page 5 Barnard

6 Base your answers to questions 19 and 20 on the weather map below. The map shows a low-pressure system and some atmospheric conditions at weather stations A, B, and C. 19. If this weather system follows a normal storm track, the low-pressure center (L) will generally move toward the northwest southwest southeast northeast 20. The arrows on which map best represent the direction of surface winds associated with this low-pressure system? Version 1 Page 6 Barnard

7 21. Which map best represents the direction of surface winds associated with the high-pressure and low-pressure systems? 22. Which map correctly shows the wind directions of the high-pressure and low-pressure systems? Version 1 Page 7 Barnard

8 23. Which map best represents the surface wind pattern associated with high-pressure and low-pressure systems in the Northern Hemisphere? 24. The map below represents a high-pressure weather system located over New York State. Which diagram represents the most probable wind direction in this high-pressure system? Version 1 Page 8 Barnard

9 25. Which map best shows the general surface wind pattern in a low-pressure system located over the eastern United States? Version 1 Page 9 Barnard

1. Which weather map symbol is associated with extremely low air pressure? A) B) C) D) 2. The diagram below represents a weather instrument.

1. Which weather map symbol is associated with extremely low air pressure? 2. The diagram below represents a weather instrument. Which weather variable was this instrument designed to measure? A) air pressure