EXERCISES, LESSON 4
INSTRUCTIONS: The following exercises are to be answered by marking the lettered
responses that best answers the question or best completes the statement or by writing
the answer in the space provided.
After you have completed all the exercises, turn to "Solutions to Exercises" at the end of
the lesson and check your answers.
When working in the field, temperatures may have to be compensated by:
a. Using a large fan.
b. Keeping tanks covered with lids.
Developing film at only certain times of the day.
d. Using chemicals.
When processing manually at temperatures from 75 to 90F, sodium sulfate is
a. Slow development.
b. Speed development.
Harden the emulsion.
d. Soften the emulsion.
Photofluorographic film is classified as _______-sensitive and ________-sensitive,
depending on the type screen with which it is to be used.
a. Green, yellow.
b. Red, green.
d. Blue, red.