The Doppler Effect

Question 1 of 10

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When a sound source approaches a stationary observer, the frequency of the sound source:

Select one of the following:

  • Becomes louder

  • Becomes quieter

  • Appears louder

  • Appears quieter

Question 2 of 10

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What is 20km/h in m/s?

Select one of the following:

  • 200m/s

  • 20000m/s

  • 5.55m/s

  • 333.3m/s

Question 3 of 10

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In the formula f'=\(\frac{v±vo}{v±vs}\)f, v stands for:

Select one of the following:

  • The frequency observed by the observer

  • The speed of the wave from the sound source

Question 4 of 10

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What, approximately, is the speed of sound in air

Select one of the following:

  • 400 m/s

  • 340 m/s

  • 1500 m/s

Question 5 of 10

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If an object is moving at the same speed at which sound travels in that medium, it is travelling at:

Select one of the following:

  • Mach 1

  • It is impossible to move this fast

  • Supersonic

Question 6 of 10

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Who was the Doppler Effect named after?

Select one of the following:

  • Christian Doppler, the Austrian scientist

  • Johann Doppler, the German race car driver

  • Madame Doppler, the French pilot

Question 7 of 10

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If a man is standing on the side of the road when an ambulance with its siren on passes him, when the ambulance is moving away from him the frequency of its siren:

Select one of the following:

  • Becomes quieter

  • Appears louder

  • Becomes louder

  • Appears quieter

Question 8 of 10

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Is an object is travelling faster than the speed of sound in that medium, it is travelling at:

Select one of the following:

  • It is impossible to travel this fast

  • Supersonic speeds

  • 300 m/s

Question 9 of 10

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When a sound source is stationary, the wavelength between the sound waves it produces are:

Select one of the following:

  • The same

  • All different

  • Smaller on the right hand side of the object

Question 10 of 10

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When the wavelength becomes smaller, the frequency:

Select one of the following:

  • Stays the same

  • Becomes smaller

  • Becomes larger

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The Doppler Effect

ed.wilson89
Quiz by , created almost 3 years ago

This quiz tests your knowledge of The Doppler Effect

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leonie.examtime
Created by leonie.examtime almost 3 years ago
ed.wilson89
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