Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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The
speed of electromagnetic waves is ____. a. | greater in water than in air | b. | different for
each frequency in a vacuum | c. | 300,000 km/s in a vacuum | d. | less for light
than for X rays | | |
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2.
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The
____ is the particle that carries radiant energy. a. | proton | c. | neutron | b. | photon | d. | electron | | | | |
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3.
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Electromagnetic radiation with the shortest wavelengths is ____. a. | gamma
rays | c. | radio
waves | b. | ultraviolet waves | d. | infrared waves | | | | |
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4.
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____
are used for medical imaging. a. | Ultraviolet waves | c. | X rays | b. | Infrared
waves | d. | Gamma
rays | | | | |
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5.
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Carrier waves are in the wavelengths of ____. a. | microwaves | c. | radio
waves | b. | infrared waves | d. | light waves | | | | |
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6.
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AM
wave frequencies are ____ FM frequencies. a. | higher than | c. | the same as | b. | lower
than | d. | both a and
b | | | | |
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7.
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A
pager is a ____. a. | CRT | c. | cell | b. | cap code | d. | radio receiver | | | | |
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