Sound Waves and Their Properties

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Questions and Answers

What does the term 'amplitude' represent in a sound wave?

  • The distance between consecutive compressions or rarefactions
  • The maximum magnitude of disturbance in the medium (correct)
  • The time taken for one complete oscillation
  • The number of oscillations per second

Which formula correctly expresses the relationship between wave speed, frequency, and wavelength?

  • $v = A imes T$
  • $v = u imes ho$
  • $v = rac{1}{ u} imes rac{1}{ au}$
  • $v = u imes rac{1}{ au}$ (correct)

If a sound wave has a frequency of 440 Hz, what is its time period?

  • 0.00227 s (correct)
  • 0.5 s
  • 2.27 s
  • 1 s

What SI unit is the time period of a wave expressed in?

<p>Seconds (s) (D)</p> Signup and view all the answers

Which of the following statements about frequency and time period is correct?

<p>Frequency and time period are inversely related. (C)</p> Signup and view all the answers

What causes sound waves to propagate through a medium?

<p>Vibrating objects creating pressure changes (A)</p> Signup and view all the answers

Which of the following correctly describes the behavior of particles in a sound wave?

<p>Particles oscillate back and forth about their mean positions (C)</p> Signup and view all the answers

At what temperature does the speed of sound in air reach approximately 340 m/s?

<p>15°C (B)</p> Signup and view all the answers

What best describes the intensity of sound?

<p>It is a measure of the sound's energy over a specific area (B)</p> Signup and view all the answers

How is pitch related to sound waves?

<p>It corresponds to the frequency of the sound wave (D)</p> Signup and view all the answers

In which medium does sound travel the fastest?

<p>Solids (A)</p> Signup and view all the answers

What is a monotone sound?

<p>A continuous, unchanging single-pitched sound (D)</p> Signup and view all the answers

Which factor does not affect the loudness of a sound?

<p>Ambient temperature of the environment (D)</p> Signup and view all the answers

Flashcards

Elasticity

The ability of a material to resist deformation when a force is applied. A stiff material changes shape less than a less stiff material.

Sound Wave

A disturbance that transfers energy through a medium. Sound waves require a medium to travel.

Compressions

Points in a sound wave where the medium is compressed, higher density and pressure.

Rarefactions

Points in a sound wave where the medium is less dense and pressure is lower.

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Wavelength

The distance between two consecutive compressions or rarefactions in a sound wave.

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Frequency

The number of sound wave cycles per second.

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Sound Intensity

The loudness of a sound, directly related to the energy carried by the sound wave.

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Monotone

A continuous unchanging, single-pitched sound.

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Amplitude of a sound wave

The maximum displacement of a particle from its mean position in a sound wave.

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Wavelength of a sound wave

The distance between two consecutive compressions or rarefactions in a sound wave.

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Frequency of a sound wave

The number of complete oscillations (compressions/rarefactions) per second in a sound wave.

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Time period of a sound wave

The time taken for one complete oscillation (compression/rarefaction) in a sound wave.

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Wave speed

The speed at which a wave travels through a medium. It is equal to the product of frequency and wavelength.

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