Modified True/False
Indicate
whether the sentence or statement is true or false. If false, change the identified word or
phrase to make the sentence or statement true.
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1.
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Waves
that require a medium through which to pass are called electromagnetic waves.
_________________________
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2.
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In
transverse waves, the medium moves at right angles to the direction in which the wave is
traveling. _________________________
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3.
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The
unit associated with amplitude is the hertz. _________________________
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4.
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Sound
waves travel at different speeds in different mediums. _________________________
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5.
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Refraction is a bending that occurs when a wave moves from one medium to
another at an angle and changes speed. _________________________
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6.
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Constructive interference occurs when the amplitudes of two waves combine to
produce a wave with a smaller amplitude. _________________________
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7.
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Nodes
are points on a standing wave where the amplitude of the wave is maximum.
_________________________
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8.
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The
waves produced by earthquakes are known as seismic waves.
_________________________
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9.
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Tsunamis are huge ocean secondary waves caused by underwater earthquakes.
_________________________
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10.
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A
seismograph records the air movements caused by seismic waves.
_________________________
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Essay
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11.
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How
does the motion of the particles of the medium differ among transverse, longitudinal, and surface
waves?
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12.
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How
can you measure the wavelength of a transverse wave? Of a longitudinal wave?
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13.
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Describe how to calculate each of wavelength, speed, and frequency if you know the
other two factors. What is the wavelength of a 25-hertz wave traveling at 35 cm/s?
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14.
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Suppose that a reflected light wave has an angle of reflection of 30°. What must
be the angle of incidence and what must be the angle between the reflecting surface and the incoming
wave? Explain.
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15.
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What
is interference? Describe the effect of each of the two types of wave interference on
amplitude.
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16.
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How
is it possible for a sound to shatter a glass?
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17.
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Why
is it that S waves cannot be detected on the side of Earth opposite an earthquake?
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18.
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How
do scientists use a seismograph to determine how far away an earthquake has occurred?
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