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Assignment Questions - 14209_452
Assignment Questions - 14209_454

Photography (Basic) - Introduction to photography and other graphic techniques
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7-44. What  is  the  most  important  reason for  ensuring  that  photographic chemicals  are  mixed  properly? 1. using  improperly  mixed chemicals  is  always  hazardous to the user’s health 2. Improperly  mixed  chemicals  may ruin the film from an important mission 3. The mixing equipment may be damaged 7-45. The  storage  of  unmixed  chemicals should  be  at  what  approximate temperature  and  relative  humidity, respectively? 1. 20°F;  68  percent 2. 40°F;  75  percent 3. 68°F;  20  percent 4. 75°F;  40  percent 7-46. Containers  made  from  what  material are best for storing liquid developer? 1. Hard rubber 2. Plastic 3. Glass 4. Stainless  steel 7-47. Air space should never be left in a large bottle used for storing developer  replenisher. 1. True 2. False 7-48. Floating lids are used for storage of large volumes of solution in tanks  for  what  primary  purpose? 1. To  prevent  dust  from  settling on the surface of the solution 2. To prevent water in the solution  from  evaporating 3. To  prevent  unauthorized  use of the solution 4. To  protect  the  solution  from aerial  oxidation 7-49. 7-50. 7-51. 7-52. Which  of  the  following  materials is NOT suitable for a photographic chemical  storage  tank? 1. Aluminum 2. Glass 3. 316  Stainless  Steel 4. Polyethylene When washed well between uses, wooden  paddles  make  excellent chemical  mixing  tools. 1. True 2. False The curved surface at the top of a solution is known by what term? 1. Convexation 2. Concavation 3. Meniscus 4. Mantissa An  increase  in  temperature  has what effect, if any, on chemical action? 1. It  increases 2. It  decreases 3. None Learning  Objective: Identify items of equipment used in Navy imaging facilities to test or verify  chemical  solutions. 7-53. What instrument is used to measure  the  specific  gravity of a solution? 1. Densitometer 2. pH meter 3. Hydrometer 4. Thermometer 53







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