In items 7-12 through 7-14, select from column B 

 the northernmost boundary of each of the earth's 

 light (or heat) zones listed in column A. 



A. Light (Heat) 

 Zones 



7-12. Torrid 



7-13. North Temperate 



7-14. South Temperate 



B. 



Northernmost 

 Boundaries 



1. Equator 



2. Tropic of 

 Capricorn 



3. Tropic of 

 Cancer 



4. Arctic Circle 



Learning Objective: Relative to 

 radiation, recognize phenomena 

 related to incoming solar radia- 

 tion (insolation), its disposition, 

 and balance in the atmosphere. 



7-15. Which means of heat transfer is most 



important since all of the heat of the 

 earth is received through this means? 



1. Advection 



2. Conduction 



3. Convection 



4. Radiation 



7-16. Approximately one half of the electromag- 

 netic energy emitted by the sun is in the 

 form of 



1. heat 



2. visible light 



3. gamma rays 



4. infrared rays 



7-17. Which of the following statements concern- 

 ing radiation and reradiation is correct? 



1. The earth receives long wave radiation 

 from the sun and reradiates it into 

 space in long waves 



2. The earth receives long wave radiation 

 from the sun and reradiates it into 

 space in short waves 



3. The earth receives short wave radia- 

 tion from the sun and reradiates it 

 into space in long waves 



4. The earth receives short wave radia- 

 tion from the sun and reradiates it 

 into space in short waves 



7-19. Of the wavelengths that strike the earth's 

 surface, albedo is the percentage of those 

 which are 



1. reflected 



2. dispersed 



3. absorbed 



4. scattered 



7-20. Which of the following surfaces have the 

 lowest albedo when the sun is directly 

 overhead? 



1. Water surfaces 



2. Dark forests 



3. Old, dirty snow surfaces 



4. Upper surfaces of clouds 



7-21. A higher earth temperature than that 



which would ordinarily occur from direct 

 insolation alone is caused by 



1. inversion 



2. dispersion 



3. the greenhouse effect 



4. scattering 



7-22. Refer to figure 12-4 in your textbook. 

 The temperature of the earth's surface 

 being heated by the oblique rays is 

 lower than that of the surface being 

 heated by the perpendicular rays because 

 of 



1. inversion 



2. dispersion 



3. absorption 



4. scattering 



7-23. The sky appears to be blue because of 



1. inversion 



2. dispersion 



3. the greenhouse effect 



4. scattering 



7-24. Practically all the radiation received in 

 the polar regions during winter is caused 

 by 



1. counter-radiation 



2. atmospheric radiation 



3. terrestrial radiation 



4. diffuse sky radiation 



7-25. What process prevents the polar regions 

 from becoming progressively colder and 

 the tropical regions from becoming 

 progressively hotter? 



1. Radiation 



2. Reflection 



3. Circulation 



4. The greenhouse effect 



7-18. The rate at which solar radiation is 



received by a unit (horizontal surface) 

 at any point on the earth's surface is 

 known as 



1. temperature 



2. solar constant 



3. molecular stimulation 



4. insolation 



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