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Unit 10 Waves Test

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What is the highest point of a wave called?
Wavelength
Amplitude
Trough
Crest
What is the distance between two consecutive crests or troughs in a wave known as?
Trough
Amplitude
Wavelength
Crest
Find the velocity of a wave in a wave pool if its wavelength is 3.2 m and its frequency is 0.60 Hz.
1.92 m/s
5.33 m/s
19.2 m/s
0.19 m/s
An earthquake produces a wave that has a wavelength of 417 m and travels at 5,000 m/s. What is its frequency?
0.83 Hz
2,085,000 Hz
0.08 Hz
12 Hz
When a pencil is placed in a glass of water, the pencil appears broken at the surface of the water. This is because the light
slows down as it moves from air into water
stops when it hits the water
speeds up as it moves from air into water
does not change speed
The following diagram illustrates water waves passing though an opening in a barrier. This is an example

Interference
Refraction
Diffraction
Reflection
What is the wavelength of the wave shown in to diagram below?

1 m
2 m
0.5 m
3 m
Base your answer to the following question on the diagram below which represents a wave traveling to the right along an elastic medium.



What is the amplitude of the wave?
1.0 m
0.75 m
0.5 m
0.25 m
When a transverse wave is moving through a medium, what is the action of the particles of the medium?
They travel through the medium with the wave
They remain at rest.
They vibrate in a direction perpendicular to the direction in which the wave is moving.
They vibrate in a direction parallel to the direction in which the wave is moving.
An observer detects an apparent change in the frequency of sound waves produced by an airplane passing overhead. This phenomenon illustrates
wave intensity increase
the refraction of sound waves
wave amplitude increase
The Doppler effect
A student listens to music from a speaker in an adjoining room, as represented in the diagram below.


She notices that she does not have to be directly in front of the doorway to hear the music. This spreading of sound waves beyond the doorway is an example of
diffraction
refraction
the Doppler effect
resonance
The diagram below shows a ray of light being reflected from a plane mirror. Which letter indicates the angle of reflection?

B
C
A
D
Which ray diagram best represents the phenomenon of refraction?

A
D
B
C
What type of wave is shown below?

Longitudinal
Transverse
Compressional
What type of wave is shown below?
Transverse
Longitudinal
Compressional
The diagram shown represents four waves traveling to the right in the same transmitting medium.


Which wave has the greatest frequency?
A
B
C
D
The diagram shown represents four waves traveling to the right in the same transmitting medium.


Which wave has the greatest amplitude?
B
C
A
D
A laser beam is directed at the surface of a smooth, calm pond as represented in the diagram below.


Which organisms could be illuminated by the laser light?
the bird and the fish
the crab and the fish
the crab and the seaweed
the bird and the seaweed
A straight glass rod appears to bend when placed in a beaker of water, as shown in the diagram below.


What is the best explanation for this phenomenon?
Light is refracted as it crosses the air-water interface.
Light travels faster in water than in air.
Light is reflected at the air-water interface.
The water is warmer than the air.
Light waves that bounce off an object are
waved
deflected
reflected
refracted
Examine the picture below.


What is the amplitude of this wave?
3 m
6 m
0 m
1 m
2 m
Examine the picture below.


What is the wavelength of this wave?
0.5 m
0 m
3 m
1 m
1.75 m
2 m
6 m
Two fire trucks with sirens on speed towards and away from an observer as shown below?


Which truck produces a higher than normal siren frequency?
A
Neither, both frequencies are the same
B
Two fire trucks with sirens on speed towards and away from an observer as shown below?


Which truck produces a lower than normal siren frequency?
A
B
Neither, both frequencies are the same
When an automobile moves towards a listener, the sound of its horn seems relatively
no change
low pitched
high pitched
normal pitched
A trumpet player is standing on a stage playing a single note. Which choice would result in you hearing a higher pitch than the trumpeter?
Run very fast toward the trumpeter
Cover your ears
Get the trumpeter to point the horn at the sky.
Play the sound much louder through a headphone
What does the Doppler effect produce an apparent changes in?
Velocity
Loudness
Frequency
Amplitude
One end of a rope is attached to a variable speed drill and the other end is attached to a 5.0-kilogram mass. The rope is draped over a hook on a wall opposite the drill. When the drill rotates at a frequency of 20.0 Hz, standing waves of the same frequency are set up in the rope. The diagram below shows such a wave pattern.



Calculate the speed of the wave in the rope.
60 m/s
4 m/s
15 m/s
6.67 m/s
One end of a rope is attached to a variable speed drill and the other end is attached to a 5.0-kilogram mass. The rope is draped over a hook on a wall opposite the drill. When the drill rotates at a frequency of 20.0 Hz, standing waves of the same frequency are set up in the rope. The diagram below shows such a wave pattern.



Determine the wavelength of the waves producing the standing wave pattern.
5 kg
20 Hz
3 m
1.5 m
A student and a physics teacher hold opposite ends of a horizontal spring stretched from west to east along a tabletop. Identify the directions in which the student should vibrate the end of the spring to produce transverse waves.
North and South
West and East
The diagram below shows two waves traveling in the same medium for the same length of time.

The two waves have different
amplitudes
wavelengths
speeds
frequencies
The diagram below shows two waves traveling in the same medium for the same length of time.

Which of the two waves would result in a louder volume?
neither
they both would have the same volume
the bottom wave
the top wave
The diagrams below show four waves that pass simultaneously through a region.



Which two waves will produce maximum constructive interference if they are combined?
C and B
B and C
A and C
C and D
A and B
Light is incident on a mirror. The light is reflected from the mirror. The angle of incidence is i and the angle of reflection is r.


Which diagram correctly shows i and r?
B
D
C
A
Consider noise-canceling headphones. These headphones produce sound waves that are out of phase with ambient noise. When these opposite waves meet, they cancel each other out, making your environment quieter.

This scenario is an example of
refraction
diffraction
destructive interference
constructive interference
reflection
If you stand around the corner from a marching band, you can still hear the music even though you’re not in a direct line of sight. This is because sound waves bend around corners.

This scenario is an example of
destructive interference
refraction
constructive interference
diffraction
reflection