Physics Chapter on Sound

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Questions and Answers

What does a higher pitch correspond to?

  • Higher frequency of vibration (correct)
  • Higher amplitude of sound waves
  • No change in vibration frequency
  • Lower frequency of vibration

What is defined as the maximum distance particles move in a sound wave?

  • Pitch
  • Amplitude (correct)
  • Loudness
  • Frequency

How is frequency measured?

  • In wavelengths
  • In decibels (dB)
  • In hertz (Hz) (correct)
  • In amplitudes

What happens to loudness when amplitude increases?

<p>It increases (C)</p> Signup and view all the answers

If a sound has a frequency of 300 Hz, how many vibrations occur in one second?

<p>300 complete vibrations (C)</p> Signup and view all the answers

What causes sound to be perceived?

<p>The vibration of particles in a substance (B)</p> Signup and view all the answers

How does loudness change with distance from a sound source?

<p>Loudness decreases as distance from the source increases (D)</p> Signup and view all the answers

What effect does higher amplitude have on sound?

<p>It results in a louder sound (D)</p> Signup and view all the answers

Which statement is true regarding sound and distance?

<p>Sound gets quieter with increasing distance from the vibrating object (C)</p> Signup and view all the answers

What is the relationship between vibration and sound perception?

<p>Vibration causes particles to move, creating sound (A)</p> Signup and view all the answers

What causes sound to be produced?

<p>The disturbance of particles in a substance. (A)</p> Signup and view all the answers

Which statement best describes the relationship between loudness and distance from the vibrating object?

<p>Loudness decreases as the distance from the vibrating object increases. (B)</p> Signup and view all the answers

How does the distance of the vibrating object affect the sound produced?

<p>Vibrating objects farther away make sounds quieter. (B)</p> Signup and view all the answers

What happens to the particles in the air when a sound is made?

<p>They vibrate and travel a certain distance from the source. (A)</p> Signup and view all the answers

Which of the following does NOT affect the loudness of sound?

<p>The number of particles in the substance. (C)</p> Signup and view all the answers

Flashcards

Sound creation

Sound is created when particles in a substance vibrate.

Loudness

Loudness is how quiet or loud a sound is.

Amplitude and loudness relation

The greater the distance of each vibration from the source, the louder the sound.

Sound distance

Sounds get quieter as the distance from the source increases.

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Energy dissipation and sound

Sounds get quieter when the distance from the vibrating object increases because of energy loss.

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Pitch

How high or low a sound is on a musical scale.

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Frequency

Number of vibrations per second (measured in Hz).

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300 Hz

Sound wave vibrating 300 times per second.

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Amplitude

Maximum distance particles move; related to loudness.

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Loudness

Sound intensity; determined by Amplitude.

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Sound Creation

Sound is made when particles vibrate and transfer energy.

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Loudness Factors

Loudness depends on vibration distance and listener distance from the source.

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Amplitude

Amplitude is the vibration strength which affects sound loudness.

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Sound Attenuation

Sound gets quieter as distance from the source increases.

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Vibrating Particles

Vibration causes particles in a substance to create sound.

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