ch11 - MULTIPLE CHOICE. Choose the one alternative that...

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Unformatted text preview: MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Most of the electromagn etic spectrum consists of visible light. 1) _______ A) True B) False 2 ) Electromagn etic waves consist of 2) _______ A) v i b r a t i n g e lec tric an d ma gn eti c fiel ds. p a rt icles of light energy. compressions and rarefactions of electromagnetic pulses. D) high-frequency gravitational waves. 3) The source of all electromagn etic waves is 3) _______ A) v i b r ati ng ato ms. c r y stalline fluctuatio ns. changes in atomic energy levels. D) accelerating electric charges. E) none of these 4) What is the wavelength of an electromagn etic wave that has a frequency of 1 Hz? 4) _______ A) more than 1 m B) less than 1 m C) 1 m 5) What is the wavelength of an electromagn etic wave that has a frequency of 3 kHz? 5) _______ A) more than 1 km B) 1 km C) less th 1 6) Electromagn etic waves 6) _______ A) c a n t r a v el thr ou gh a vac uu m. n e e d a medium to travel through. The main difference between a radio wave and a light wave is its 7) _______ A) f r e qu enc y. w a velength. speed. D) all of these E) two of these 8) What is the frequency of an electromagn etic wave that has a wavelength of 300,000 km? 8) _______ A) more than 1 Hz B) less than 1 Hz C) 1 Hz 9) Which of these electromagn etic waves has the shortest wavelength? 9) _______ A) X ray s u lt raviolet waves infrared waves D) light waves E) radio waves 10) The main difference between a radio wave and a sound wave is their different 10) ______ A) w a v elen gths . f r equenci es. amplitudes. D) energies. E) basic natures. 11) Relative to ultraviolet waves, the wavelength of infrared waves is 11) ______ A) longer. B) shorter. C) the sa e. 12 ) Relative to radio waves, the velocity of visible light waves in a vacuum is 12) ______ A) less. B) the same. C) mor e. 13 ) If the Sun were to disappear right now, we wouldn't know about it for 8 minutes because it takes 8 minutes 13) ______ A) f o r t h e Sun to disa ppe ar. f o r li g ht to travel from Sun to Earth. to operate receiving equipment in the dark. D) all of these E) none of these 14) If an electric charge is shaken up and down, 14) ______ A) e l e c t r on exci tatio n occ urs. li g ht is emitted. a changing magnetic field is created. D) sound is emitted. E) its mass decreases. 15) If an...
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This note was uploaded on 02/11/2011 for the course PS 300 taught by Professor Na during the Spring '11 term at Cornell.

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ch11 - MULTIPLE CHOICE. Choose the one alternative that...

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