8-43. You place a long roll of 35mm film in a film dryer to dry. What action should you take to prevent the  film  from  curling? 1. Attach a film clip to the bottom of the roll 2. Cut the film into six-frame  segments 3. Dry the film on the film reel 4. Hang the film in a U-shape loop 8-44. What is the best "cure" for film- drying  problems? 1. Rewashing 2. Retouching 3. Prevention 4. Using  a  wetting  agent 8-45. Film that is   overdried can be identified  by  what  characteristic? 1. The film curls toward the emulsion 2. The film curls toward the base 3. The base of the film turns pink 4. The images on the film appear faded 8-46. Film dryers   use  air  impingement for what reason? 1. To help harden the gelatin 2. To  cause  the  metallic  silver to  “set” 3. To prevent film curl 4. To  promote  faster  drying Learning  Objective: Recognize equipment  used  in  film  processing. 8-47. Duckboards  used  in  photographic processing  sinks  serve  what purpose? 1. They rock trays and tanks to  provide  even  agitation 2. They allow water to drain completely 3. They allow tanks or trays to float in the water bath 4. They  allow  water  to  circulate under and around tanks and trays   to  maintain  chemical temperatures 8-48. What factor has the greatest bearing  on  selecting  a  safelight filter to use with a given photographic   material? 1. The wattage of the light bulb 2. The working distance from the safelight  to  the  light- sensitive  material 3. The  color  sensitivity  of  the light-sensitive   material 4. The length of time the light- sensitive  material  must  be exposed  to  the  safelight illumination 8-49. It takes 6 minutes to process a given  light-sensitive  material. To carry out the entire process of this material under the illumination  of  a  safelight,  you must  ensure  the  safelight  does  NOT cause any evidence of fogging for what minimum length of time, in minutes? 1. 6 2. 8 3. 12 4. 24 8-50. What type of roll film reel is used most commonly in Navy imaging  facilities? 1. Thumb-feed  plastic 2. Center-feed  plastic 3. Thumb-feed  stainless  steel 4. Center-feed  stainless  steel 8-51. A total of how many sheets of film can be washed properly at one time in a tray? 1. One 2. Two 3. Three 4. Four 8-52. What is the most effective method of washing film or paper in a tray? 1. Allow the water to fall directly on the film 2. Dump or change the water in the tray every 5 minutes 3. Rock  the  tray  constantly 4. USC a siphon system 61