Gry 135 - Investigations 9a Study Guide Rated A+

19. Survey the Figure 9A-5 map for wind speeds of 70 knots or more (one flag and 2 long feathers). Using this wind speed threshold to define the existence of a jet stream, there ______ evidence of a jet stream curving across the U.S. on the 300-mb constant-pressure map. {Ans: Was strong}18. From the 300-mb station models, the highest wind speed plotted on the Figure 9A-5 map occurred at Omaha, NE indicating ______ knots. For reference, the wind barb includes three flags. {Ans: }6. In the Northern Hemisphere, when the polar-front jet stream is south of your locality, the weather is relatively ______. {Ans: Cold}11. Recall that the heights radiosondes detect at 500 mb are reported in the upper right position of the station, plotted in tens of meters. Place a "0" to the right of the number for the actual height. The height of the 500-mb pressure level plotted at Topeka (TOP), in northeast Kansas, was ______ m above sea level, denoted as 553. {Ans: 5530}5. Fundamental to the formation of the polar-front jet stream within the westerlies is that warm air is less dense than cold air when both are at the same pressure.