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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Electromagnetic waves can transfer energy without a(n) a. | medium. | b. | electric field. | c. | magnetic
field. | d. | change in either a magnetic or an electric
field. | | |
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2.
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Light
that has passed through a polarizing filter is called a. | transverse
light. | b. | polarized light. | c. | white
light. | d. | photoelectric light. | | |
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3.
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In
1905, Albert Einstein suggested that light energy travels in tiny packets or particles
called a. | neutrons. | b. | electrons. | c. | photons. | d. | gamma rays. | | |
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4.
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All
electromagnetic waves have the same a. | wavelength. | b. | frequency. | c. | speed. | d. | amplitude. | | |
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5.
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Visible light has a higher frequency than a. | X-rays. | b. | ultraviolet rays. | c. | infrared
rays. | d. | gamma rays. | | |
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6.
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The
electromagnetic waves with the highest frequencies are called a. | radio
waves. | b. | gamma rays. | c. | X-rays. | d. | visible light. | | |
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7.
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When
a police officer uses radar for speed control, the officer is using what kind of electromagnetic
waves? a. | radio
waves | b. | gamma rays | c. | ultraviolet
rays | d. | X-rays | | |
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8.
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White
light can be separated into the various colors of the visible spectrum to form a(n) a. | rainbow. | b. | thermogram. | c. | MRI. | d. | X-ray picture. | | |
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9.
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Which
type of light bulb glows when a filament inside it gets hot? a. | incandescent | b. | fluorescent | c. | sodium
vapor | d. | neon | | |
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10.
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Which
light bulbs are coated on the inside with a powder? a. | incandescent | b. | fluorescent | c. | neon | d. | sodium vapor | | |
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11.
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FM
signals travel as changes in a. | the speed of the wave. | b. | the amplitude of
the wave. | c. | the frequency of the wave. | d. | the loudness of
the wave. | | |
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12.
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Broadcasting stations can send their signals around the world using a. | cellular
telephones. | b. | television satellites. | c. | pagers. | d. | the Global Positioning System. | | |
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13.
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About
how much faster than sound are electromagnetic waves? a. | ten times
faster | b. | one million times faster | c. | one hundred
times faster | d. | one thousand times faster | | |
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14.
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Which
type of light bulb is commonly used in advertising signs and decoration? a. | incandescent | b. | fluorescent | c. | neon | d. | sodium vapor | | |
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15.
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Which
type of light bulb is used in overhead projectors? a. | tungsten-halogen | b. | neon | c. | sodium vapor | d. | fluorescent | | |
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16.
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Which
electromagnetic waves have the longest wavelengths and lowest frequencies? a. | infrared
waves | b. | radio waves | c. | ultraviolet
rays | d. | gamma
rays | | |
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17.
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On AM
broadcasts, what remains constant? a. | the amplitude | b. | the
music | c. | the frequency | d. | the
speech | | |
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18.
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Microwaves can be used to a. | treat cancer. | b. | make
rainbows. | c. | heat food. | d. | create an X-ray
image. | | |
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19.
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The
images made by an infrared camera are called a. | X-rays. | b. | thermograms. | c. | magnetic resonance images. | d. | ultraviolet
images. | | |
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20.
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An
instrument used to view different colors of light produced by each type of light bulb is called
a(n) a. | thermogram. | b. | spectroscope. | c. | radar
gun. | d. | MRI
machine. | | |
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