Investigate behaviors of waves, including reflection, refraction, diffraction, interference, resonance, and the Doppler effect.
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Q 1/11
Score 0
An ambulance is traveling AWAY from you. The frequency of the sound wave of the siren seems to
120
increase above the normal pitch (sound higher)
be the same as the normal pitch
be impossible to hear
decrease below the normal pitch (sound lower)
Q 2/11
Score 0
Sound engineers at an automobile factory plan to design a device that could be used as a type of muffler for road noise. In order to cancel all the exterior noise, they must create what type of interference with the sound waves outside the vehicle?
120
Partially constructive interference
Completely destructive interference
Completely constructive interference
Partially destructive interference
11 questions
Q.
An ambulance is traveling AWAY from you. The frequency of the sound wave of the siren seems to
1
120 sec
112.39.c.7.d
Q.
Sound engineers at an automobile factory plan to design a device that could be used as a type of muffler for road noise. In order to cancel all the exterior noise, they must create what type of interference with the sound waves outside the vehicle?
2
120 sec
112.39.c.7.d
Q.
Which of the following does not apply to a sound wave?
3
120 sec
112.39.c.7.d
Q.
A scientist using Doppler weather radar receives frequency readings reflected from a storm that are higher than the original frequencies transmitted. Based on these readings the scientist can conclude that —
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112.39.c.7.d
Q.
Sound waves have the ability to cause objects to vibrate. If a paperback book is placed near a speaker and the volume of the speaker is amplified, the book can be torn apart into small pieces.
Which wave behavior is responsible for this phenomena?
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112.39.c.7.d
Q.
The diagram below shows straight wave fronts passing through an opening in a barrier. What is this spreading or bending at the slit above referred to?
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112.39.c.7.d
Q.
A ruler submerged in a clear glass of water may appear broken or bent when observed from the side of the glass. Which of the following characteristics describes this broken or bent appearance?
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112.39.c.7.d
Q.
A star appears to be red according to its spectral composition, but it appears blue when observed through a telescope. What is the best explanation for this phenomenon?
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112.39.c.7.d
Q.
A light ray strikes the mirror such that the angle of incidence is 30 degrees. According to the above information and diagram, what is the angle between the incident ray and reflected ray?
9
120 sec
112.39.c.7.d
Q.
An astronomer observes a redshift due to the Doppler effect in the spectrum of a nearby star. What does the redshift indicate about the star’s movement and change in frequency?
10
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112.39.c.7.d
Q.
The amplitude of two light waves (Light Wave A and Light Wave B) as a function of time are shown below.Refer to space at the same time. Which of the following is the best description of the resultant light wave intensity at t = 1.5 s
