37. What is the definition of "severe wind shear"? .... 38. What is a "decreasing performance shear"? (headwind to tailwind or vice versa? calm to tailwind or vice versa? headwind to calm or vice versa? etc) 39. What is an "increasing performance shear"? (headwind to tailwind or vice versa? calm to tailwind or vice versa? headwind to calm or vice versa? etc) 40. What effect will a "decreasing performance" shear initially have on flight (especially when flying low and slow-airspeed, lift, pitch attitude, proximity to ground, etc) 41. What effect will an "increasing performance" shear initially have on flight (especially when flying low and slow-airspeed, lift, pitch attitude, proximity to ground, etc) 42. Which shear situation is most hazardous? Calm to tail? head to tail? tail to head??? 43. What is recommended procedures to follow when in a wind shear situation? .... 44. What are the characteristics of microbursts? (caused by? usual duration? maximum downdrafts? total shear across the microburst, etc,)....