Modified
True/False
Indicate whether the sentence or statement is true or false.
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1.
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Electromagnetic waves are
classified as longitudinal waves.
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2.
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Polarized light consists of
waves that vibrate in one direction only.
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3.
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Electromagnetic waves with the
longest wavelengths have the highest frequencies.
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4.
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The tuner on a radio allows you
to select a station based on the amplitude of the radio waves transmitted from the radio
station.
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5.
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Electromagnetic waves that have
wavelengths slightly shorter than those of visible light are called ultraviolet rays.
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6.
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Thermograms are produced by
X-rays.
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7.
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In a sodium vapor light, neon
and argon gas are heated until they cause sodium to change from a liquid into a gas.
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8.
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Each radio and television
station is assigned a basic broadcast frequency known as the carrier frequency.
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9.
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Cellular telephones transmit
and receive signals using high-frequency gamma rays.
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10.
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Satellite telephone systems
make long-distance telephone calls more easily available and less costly.
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Multiple
Choice
Identify the letter of the choice that best completes the statement or answers the
question.
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11.
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Which waves have some
electrical properties and some magnetic properties? a. | longitudinal waves | b. | transverse waves | c. | mechanical waves | d. | electromagnetic
waves | | |
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12.
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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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13.
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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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14.
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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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15.
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All electromagnetic waves have
the same a. | wavelength. | b. | frequency. | c. | speed. | d. | amplitude. | | |
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16.
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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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17.
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The range of electromagnetic
waves placed in a certain order is called the a. | electromagnetic
spectrum. | b. | electromagnetic wavelength. | c. | electromagnetic frequency. | d. | electromagnetic
field. | | |
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18.
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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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19.
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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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20.
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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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21.
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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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22.
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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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23.
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If something vibrates one
million times per second, it has a frequency of a. | 1 hertz. | b. | 10 hertz. | c. | 1 megahertz. | d. | 1 kilohertz. | | |
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24.
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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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25.
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What kind of waves do cellular
telephones use to transmit and receive signals? a. | gamma rays | b. | microwaves | c. | ultraviolet rays | d. | infrared rays | | |
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26.
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Small electronic communication
devices that people carry in their pockets or attach to their clothes are called a. | cordless telephones. | b. | pagers. | c. | televisions. | d. | satellites. | | |
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27.
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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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28.
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Global Positioning System
signals can tell you a. | what television station you are tuned
to. | b. | your exact location on Earth. | c. | how many satellites are in orbit. | d. | who is sending a message to your pager. | | |
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29.
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What is transferred by
electromagnetic waves? a. | sound | b. | electricity | c. | electromagnetic
radiation | d. | resonance | | |
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30.
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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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31.
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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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32.
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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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33.
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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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34.
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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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35.
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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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36.
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The process that uses radio
waves and magnetism to produce images of tissues in the human body is called a. | ultrasound. | b. | radar. | c. | magnetic resonance imaging. | d. | radiation
treatment. | | |
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37.
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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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38.
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Which of the following is true
of ultraviolet rays? a. | They are
visible. | b. | They carry information to televisions and
radios. | c. | They help your body produce vitamin D. | d. | They provide the energy that makes your morning toast. | | |
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39.
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The Global Positioning System
(GPS) was originally designed for use by the a. | citizens of the United
States. | b. | transportation industry, worldwide. | c. | United States military. | d. | radio and television stations in the
United States. | | |
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40.
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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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Short
Answer
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Use the diagram to answer
each question.
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41.
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Name the type of wave that has
the highest frequency.
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42.
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Name the type of wave labeled
C.
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43.
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Name the type of wave that has
the greatest energy.
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44.
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Which letter shows the type of
wave that can be seen by the human eye?
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45.
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Name the type of wave labeled
A.
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46.
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Which letter indicates
X-rays?
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Use the diagram to answer
each question.
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47.
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Which letter identifies a
ground transmitter of radio waves?
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48.
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Which letter represents a
ground receiver of radio waves?
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49.
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What is the object labeled
A?
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50.
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What does object A do when it
acts a receiver?
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51.
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What does object A do when it
acts as a transmitter?
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52.
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What prevents the radio waves
from B from reaching C directly?
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Essay
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53.
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Look at the following group of
terms and decide which term does not belong: star, candle flame, moon, and
glowing light bulb filament. Give a reason for your choice.
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54.
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Explain how light can be
thought of as both a particle and a wave.
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55.
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Compare and contrast the
properties of visible light, ultraviolet rays, and X-rays.
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56.
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What properties of gamma rays
make them useful in medicine? Explain.
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57.
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How is light produced in a
fluorescent bulb? In an incandescent bulb?
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58.
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Which type of radio broadcast
has a greater distance range, AM or FM? Explain.
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59.
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Contrast the transmission of
signals by a cellular telephone with the transmission of signals by a cordless
telephone.
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60.
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How do television networks use
communications satellites?
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