CHP 6 - CHAPTER 6LIGHT AND TELESCOPES Multiple Choice...

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CHAPTER 6—LIGHT AND TELESCOPES Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. What is the wavelength of the longest wavelength light visible to the human eye? a. 400 nm b. 4000 nm c. 7000 nm d. 700 nm e. 3 10 8 m ____ 2. What is the wavelength of the shortest wavelength light visible to the human eye? a. 400 nm b. 4000 nm c. 7000 nm d. 700 nm e. 3 10 8 m ____ 3. Violet light has a wavelength of approximately _______________. a. 400 nm b. 4000 nm c. 7000 nm d. 700 nm e. 3 10 8 m ____ 4. _______________ has (have) wavelengths that are longer than visible light. a. Gamma-rays b. Ultraviolet light c. Infrared radiation d. X-rays e. a, b and d above ____ 5. There are _______________ nanometers in one meter. a. 1 10 3 b. 1 10 -3 c. 1 10 9 d. 1 10 -9 e. 400 ____ 6. Observations of radio waves from astronomical objects suffer from poorer resolution than visible observations because a. the signals are so weak in the radio region. b. the wavelength of radio waves is much longer than the wavelengths of visible light. c. radio telescopes are generally much smaller in diameter than optical telescopes. d. it is very difficult to detect radio waves. e. radio telescopes don't use solid mirrors. ____ 7. _______________ has (have) wavelengths that are shorter than visible light. a. Gamma-rays b. Ultraviolet light c. Infrared radiation d. Radio
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e. a and b ____ 8. Astronomer's build optical telescopes on tops of mountains because a. there is less air to dim the light. b. the seeing is better. c. CCDs work better when there is less oxygen in the air. d. all of the above e. a and b ____ 9. A _______________ has a few million light sensitive diodes in an array about a half-inch square. a.
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CHP 6 - CHAPTER 6LIGHT AND TELESCOPES Multiple Choice...

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