ASSIGNMENT  7 Textbook  Assignment:  “Topographic  Surveying  and  Mapping.”  Pages  8-1  through  8-24. 7-1. 7-2. 7-3. 7–4. 7-5. Learning  Objective:  Recognize procedures and definitions associated with horizontal and vertical  control. Which of the following elements is representative of topographic maps? 1. The earth’s surface 7-6. 2. The earth’s natural features 3. The man-made features 4. Each of the above Topographic map information is obtained in what manner? 1. From  photographs 2. From  other  maps 3. By a topographic survey 4. By observation from aircraft 7-7. Control points are located in what manner? 1. By triangulation only 2. By traversing only 3. Both 1 and 2 above 4. By indirect leveling In a topographic survey of an area, what kind of control is established 7-8. by crossties from one side of the area to another? 1. Primary 2. Secondary 3. Horizontal 4. Vertical Vertical control is normally established by which of the following  means? 1. Direct leveling 2. Trigonometric leveling 3. Barometric leveling 4. Indirect  leveling Learning  Objective:  Recognize procedures used in locating topographic details by the transit-tape  method  and  the transit-stadia  method.  Compute horizontal distances and elevations. When topographic maps require a high degree of accuracy, what method of finding detai1s is recommended? 1. Transit and tape 2. Transit and stadia 3. Transit and trigonometric leveling 4. EDM and level When time is more critical than a high degree of accuracy, what method of locating details is recommended? 1. Transit and tape 2. Transit and stadia 3. Transit and trigonometric leveling 4. EDM  and  level Which of the following actions should you take to avoid overcrowding and confusion when sketching details during fieldwork? 1. Use azimuths instead of deflection  angles 2. Use numbers and legends for a large number of details 3. Both 1 and 2 above 4. Estimate distances and angles 45