ASSIGNMENT  6 Textbook  Assignment:  “Indirect  Leveling/Level  and  Traverse  Computations.”  Page  7-1  through 7-30. Learning  Objective:  Recognize characteristics  and  procedures associated  with  barometric  and trigonometric  leveling  and compute  elevations. 6–1. Barometric  leveling  is  used  to measure the difference in elevations by which of the following  methods? 1. By  measuring  the  slope  angle 2. By  measuring  the  atmospheric pressure 3. By  measuring  the  slope distance 4. By  measuring  the  vertical offset 6-2. Barometric  leveling  is  used mostly in which of the following types  of  surveys? 1. Layout 2. Route 3. Reconnaissance 4. Navigational 6-3. The  minimum  number  of  altimeters required  for  a  two-base  method  of barometric  leveling  is 1. five 2. two 3. three 4. four 6-4. Barometric  leveling  should  be performed at what time of day? 1. Midday 2. 2 to 4 hours before sunrise or 2 to 4 hours after sunset 3. 2 to 4 hours after sunrise or 2 to 4 hours before sunset 4. 2 to 4 hours before sunset or 2 to 4 hours after sunset 6-5. You  are  to  determine  the  difference in  elevation  between  two  points  by trigonometric  leveling.  In  doing so, you should measure 1. the  horizontal  distance  and  the azimuth  angle 2. the  vertical  angle  and  then  take the  stadia  intercept 3. the vertical and azimuth angle and then take the rod reading 4. the slope distance and then take the  stadia  intercept 6-6. When the horizontal distance is measured,  what  trigonometric function is used to help determine the  difference  in  elevation? 1. Cosecant 2. Secant 3. Tangent 4. Cotangent 6-7. When the slope distance is measured,  what  trigonometric function is used to help determine the difference in elevation? 1. Tangent 2. Cosine 3. Sine 4. Cotangent 6-8. When the horizontal or slope distance  is  measured  by  chaining, which of the following corrections must be computed before you determine  the  difference  of elevation? 1. Repair  adjustment,  sag,  and temperature 2. Standard  error,  sag,  and  tension 3. Sag,  temperature,  and  standard error 4. Tension,  heat,  and  number  of movements 34