LESSON ONE
PRACTICE EXERCISE
ANSWER KEY AND FEEDBACK
Item
Correct Answer and Feedback
1.
A. Crossover time is in the early morning and early evening when land and
water will have the same IR output (page 8, para 11b(2)).
2.
D. Excluding cosmic radiation, rain, vapor gases and dust, and fog will effect
atmospheric attenuation (page 6, para 11a).
3.
D. The AN/AAS-24 is a passive sensor because it does not emit any signals
(pages 5/6, para 10).
4.
C. Regions of high transmission of IR energy are atmosphere windows (page
6, para 11a).
5.
B. On positive IR imagery, a hot target will be light in tone to a cold dark
background (page 15, para 1, NOTE).
6.
B. The primary source of IR energy on the earth is the sun (page 4, para 6).
7.
B. You use maps and ground data to identify the surroundings of extremely
hot targets (page 17, para 2c).
8.
C. Line M, TYPE RECON REQUESTED, is used to show that IR imagery is
requested on the Joint Tactical Air R&S Request Form (page 23, fig 1-11).
9.
A. -460 Fahrenheit is the temperature where all molecular activity ceases
(page 2, para 3).
10.
A. A large body of water will have a dark tone on negative IR imagery taken at
0200 due to its high emissivity and good heat transfer proprieties (page 20,
para 4f(6)).
11.
B. Water will range in tone from light gray to white on positive night IR
imagery (pages 15/20, paras 1, NOTE/4f(6)).
12.
C. Asphalt pavement appears light gray to white (pages 15/20, paras 1,
NOTE/4f (2)).
13.
E. Grass appears light gray to dark gray (pages 15/20, paras 1, NOTE/4f(4)).
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