7-51. Which methods are normally used for temp- 

 erature measurements? 



1. Changes in electrical resistance, 

 special analyses, and color comparison 



2. Changes in electrical resistance, 

 changes in volume of confined 

 substances, and spectral analyses 



3. Changes in volume of confined 

 substances, differences in linear 

 expansion of metals, and color 

 comparisons 



4. Changes in volume of confined 

 substances, differences in linear 

 expansion of metals, and changes in 

 electrical resistance 



7-52. Degrees Celsius represents a wider temper- 

 ature range than degrees Fahrenheit since 

 a change of 5° C is equal to a change of 

 9° F. What does a change in temperature 

 of 20° C correspond to in Fahrenheit 

 degrees? 



1. 14° F 



2. 26° F 



3. 36° F 



4. 47° F 



In items 7-53 through 7-58, by the use of 

 * the proper formula, make the indicated 

 temperature scale conversions. 



7-53. 113° F converted to Celisus is 



7-54. 



1. 



4.4° C 



2. 



45.0° C 



3. 



80.5° C 



4. 



386.0° C 



40° 



C converted to Fahrenheit is 



1. 



4.4° F 



2. 



54.0° F 



3. 



104.0° F 



4. 



313.0° F 



7-55. 



Which is the correct use of the decimal 

 method in converting 36° C to the Fahren- 

 heit temperature scale? 



1. 



36° X 1.8 = 64.8°; 64.8° - 

 32.8° F 



32° = 



2. 



36° X 1.8 = 64.8°; 64.8° + 

 96.8° F 



32° = 



3. 



36° i 1.8 = 20°; 20° - 32° 



= -12 



4. 



36° t 1.8 = 20°; 20° + 32° 



= 52° 



7-56. 



Which of the following is the correct use 

 of the decimal method in converting 68° F 

 to the Celsius temperature scale? 



1. 68° - 32° = 36°; 36° t 1.8 = 20° C 



2. 68° - 32° = 36°; 36° X 1.8 = 20° C 



3. 68° + 32° = 100°; 100° i 1.8 = 55.5° C 



4. 68° + 32° = 100°; 100° X 1.8 = 180° C 



7-57. 76° C converted to Absolute is 



1. 24.4° A (or K) 



2. 80.9° A (or K) 



3. 197.0° A (or K) 



4. 349.0° A (or K) 



7-58. 95° F converted to Absolute is 



1. 35° A (or K) 



2. 203° A (or K) 



3. 308° A (or K) 



4. 368° A (or K) 



Learning Objective: Recognize clas- 

 sifications, characteristics, and 

 phenomena associated with atmospheric 

 zones. 



7-59. As a general rule, temperature decreases 

 with altitude. A condition in which 

 the reverse occurs is known as 



1. scattering 



2. reflection 



3. inversion 



4. the greenhouse effect 



7-60. Which condition exists when temperature 

 remains constant with altitude? 



1. Stable 



2. Unstable 



3. Inversion 



4. Isothermal 



7-61. All the following atmospheric zones are 

 classified as meteorological except the 



1. exosphere 



2. stratosphere 



3. ozonosphere 



4. thermosphere 



7-62. Above what area of the earth is the 



height of the troposphere the greatest? 



1. The poles at all times 



2. The Equator at all times 



3. The midlatitudes 



4. The poles in the summer and the 

 Equator in the winter 



7-63. All weather occurs in which meteorological 

 zone? 



1. Mesosphere 



2. Thermosphere 



3. Stratosphere 



4. Troposphere 



43 



