Quiz 2 Flashcards
When we consider how frequently a pendulum swings to and fro, we’re talking about its
a. frequency.
b. period.
c. wavelength.
d. amplitude.
frequency
If the frequency of a particular wave is 20 Hertz, its period is
A. 1/20 second.
B. 20 seconds.
C. more than 20 seconds.
D. none of the above
1/20 second
The distance between adjacent peaks in the direction of travel for a transverse wave is its
A. frequency.
B. period.
C. wavelength.
D. amplitude.
wavelength
The vibrations along a transverse wave move in a direction________ to the wave
A. along the wave.
B. perpendicular to the wave.
C. both of the above
D. neither of the above
perpendicular
The vibrations along a longitudinal wave move in a direction
A. along the wave.
B. perpendicular to the wave.
C. both of the above
D. neither of the above
along the wave
The speed of sound varies with
A. Amplitude
B. Frequency
C. Temperature
D. All of the above
temperature
Which signal will the person hear first?
A. Radio Signal
B. Nonbroadcast sound signal
C. Both at the same time
D. None of the above
Both at the same time
Compared with the speed of a sound wave, a radio wave travels
A. Most often, faster.
B. Faster always in all conditions
C. About the same speed as a sound wave in the same temperature air.
C. Slower under some conditions
faster always in all conditions
The reflection of a sound wave is known as its
A. Pitch.
B. Harmony.
C. Echo.
D. virtual image.
Echo
Compared with a dry road, seeing is difficult when driving at night on a wet road. Why?
A. Wet surface is smooth with less diffuse reflection, part of which would otherwise reach the driver’s eyes.
B. Wet road usually means a wet windshield.
C. Wet road usually means more vapor in the air.
D. There is no reason—that’s just the way it is.
Wet surface is smooth with less diffuse reflection, part of which would otherwise reach the driver’s eyes
The law of reflection applies to
A. Light.
B. Sound.
C. Both of the above.
D. None of the above.
Both of the above
Refraction occurs when a wave travels from
A. air to water.
B. water to air.
C. a dense part of a medium to a less dense part, air for example.
D. All of the above.
All of the above
When an object is set vibrating by a wave that has a frequency that matches the natural frequency of the object, what occurs is
A. forced vibration.
B.resonance.
C.refraction.
D.diffraction
resonance
Interference is a property of
A. sound.
B. light.
C. both sound and light.
D. neither sound nor light.
both sound and light
Sound waves can be cancelled by the process of
A. multiple reflections.
B. double refraction.
C. resonance.
D. None of these.
None of these
The regions of a standing wave with zero amplitude are known as
A. overtones.
B. antinodes.
C. troughs.
D. nodes.
Nodes
Which of these is not in the same family
a. Sound.
b. Light.
c. Infrared radiation.
d. Radio waves.
Sound
The electromagnetic spectrum is a span of electromagnetic waves, ranging from lowest to highest frequencies. The smallest portion of the electromagnetic spectrum is that of
A. radio waves.
B. microwaves.
C. visible light.
D. gamma rays.
visible light
Which of these colors corresponds to the highest frequency?
a. Red.
b. Green.
c. Blue.
d. Violet.
Violet
A photographer wishes to photograph a lightning bolt by setting his camera so that it is triggered by the sound of thunder. Is this a good idea or a poor idea?
A. Good idea for nearby lightning strikes
B. Good idea for all strikes
C. Poor idea for nearby lightning strikes
D. Poor idea for all strikes
Poor idea for all strikes
An axis of sight is reversed when you look at yourself in a plane mirror. That reversed axis is
a.left and right.
b.up and down.
c.front and back.
d.None are really reversed.
front and back
Diffuse reflection occurs when the sizes of surface irregularities are
a. small compared to the wavelength of reflected radiation.
b. large compared to the wavelength of reflected radiation.
c. both of the above.
d. none of the above.
large compared to the wavelength of reflected radiation
When ultraviolet light shines on glass, electrons in the glass material are made to
a. resonate.
b. undergo excitation.
c. reflect.
d. Refract.
resonate
When Infrared radiation shines on glass, molecules in the glass material are made to
a. resonate.
b. undergo excitation.
c. reflect.
d. Refract.
undergo excitation
