7
SOLAR FUNDAMENTALS
ANSWERS TO TEXTBOOK QUESTIONS AND EXERCISES
1. The cyclical use of solar energy in North America follows the price of conventionally-
2. Solar thermal systems today are more reliable and longer-lasting than the systems built
4. Gases and particulates in the atmosphere absorb energy from specific wavelengths of
6. The angle of incidence of solar radiation is less (more perpendicular to the receiving
7. The earth’s declination angle is the reason for the change in day length over the year. A
8. The solar azimuth angle and the solar altitude angle will be different for cities with
9. Student answers will vary depending on location chosen. Example answer: 145 degrees
13. It is essential to properly orient the sun path disc to true south. If not done, the solar time