5-9. What  weather  pattern  may  develop when a tropical cyclone moves northward into an area with a strong  temperature  gradient? 1. The  tropical  cyclone  center will maintain its circulation, and the area of gale force winds  will  decrease 2. The  tropical  cyclone  center will  lose  its  circulation,  and the area of gale force winds will  increase 3. The  tropical  cyclone  center will  lose  its  circulation,  and the area of gale force winds will  decrease 4. The  tropical  cyclone  center will maintain its circulation, and the area of gale force winds  will  increase 5-10. If you use the regression equation method  for  forecasting  the  movement of  typhoons,    all EXCEPT which of the  following  criteria  should  be considered? 1. The  700-hPa  heights  and tendency 10° latitude from the typhoon’s center, and 90° to the right of its path of motion 2. The  700-hPa  level  moisture 3. The  700-hPa  heights  and tendency 10° latitude north of the  typhoon’s  center 4. The  intensity  and  orientation of the axis of the subtropical anticyclone  that  is  steering the  system 5-11. Which of the following is the correct  MANOP  heading  for  tropical cyclone  warnings  in  the  Atlantic Ocean? 5-12. Which of the following is the correct  WOP  heading  for  tropical cyclone  warnings  in  the  western Pacific Ocean? 5-13. Which  of  the  following  wavelengths is considered optimum for use by weather radar in the detection of precipitation? 1. 1 to 5 cm 2. 5 to 10 cm 3. 15 to 20 cm 4. 20 to 25 cm 5-14. The  ability  to  distinguish  between two targets in the same direction from the radar, but at different ranges, is a definition of what term? 1. Range  finding 2. Range  differentation 3. Range  resolution 4. Range  attenuation 5-15. The advent of the WSR-88D occurred during the period 1977 through 1979 in the United States at what location? 1. The  National  oceanographic  and Atmospheric   Administration (NOAA)  Environmental  Research Laboratories,    Washington D.C. 2. The  University  of  Colorado  at Boulder 3. The  Naval  Research  Laboratory (NRL) San Diego 4. The  National  Severe  Storms Laboratory  in  Oklahoma 5-16. Which of the following would be an example  of  velocity  aliased  data? 1. Velocities  that  can  be  measured without  error 2. Velocities  that  exceed  the maximum unambiguous velocity 3. Velocities  equal  to  the  Nyquist frequency 4. Wind speeds equal to the Nyquist  frequency 5-17. A radar set hearing a previous pulse, while listening for the most recent  pulse,    would be a definition of what term? 1. Attenuation 2. Range-folding 3. Aliased  data 4. Pulse  repetition  frequency (PRF)  reversal 5-18. In the radials where it appears, range-folded  data  has  what  type appearance? 1. Baseball  bat 2. Globular 3. Elliptical 4. Spiked 31