Gr 10 Physical Sciences Ch 8: Characteristics of a sound wave

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Questions and Answers

What is pitch primarily determined by in a sound wave?

  • Wavelength of the sound wave
  • Speed of sound in air
  • Frequency of the sound wave (correct)
  • Amplitude of the sound wave

What is the range of frequencies that humans can detect?

  • 20 Hz to 20,000 Hz (correct)
  • 50 Hz to 50,000 Hz
  • 10 Hz to 10,000 Hz
  • 100 Hz to 100,000 Hz

What is the term for sounds with frequencies below 20 Hz?

  • Infrasounds (correct)
  • Ultrasounds
  • Supersounds
  • Audible sounds

What is the formula to calculate the wavelength of a sound wave?

<p>λ = v / f (D)</p> Signup and view all the answers

What is loudness primarily related to in a sound wave?

<p>Amplitude of the sound wave (D)</p> Signup and view all the answers

What affects the perceived loudness of a sound?

<p>Both the amplitude of the sound wave and the sensitivity of the human ear (C)</p> Signup and view all the answers

What is the effect of a higher frequency on the perceived pitch of a sound?

<p>It results in a higher pitch (B)</p> Signup and view all the answers

What is the term for sounds with frequencies above 20,000 Hz?

<p>Ultrasounds (B)</p> Signup and view all the answers

What is the primary factor that determines the amplitude of a sound wave?

<p>The vibration of the sound source (B)</p> Signup and view all the answers

Why are humans more sensitive to certain frequencies than others?

<p>Because of the sensitivity of the human ear (B)</p> Signup and view all the answers

What is the primary factor that determines the tone of a sound?

<p>The pitch of the sound (A)</p> Signup and view all the answers

What is the effect of more energetic vibrations on the amplitude of a sound wave?

<p>They result in larger amplitudes (C)</p> Signup and view all the answers

What is the primary factor that determines how high or low a sound is perceived?

<p>Frequency of the sound wave (D)</p> Signup and view all the answers

Which of the following frequencies would be perceived as a higher pitch?

<p>10,000 Hz (C)</p> Signup and view all the answers

What is the effect of a larger amplitude on the loudness of a sound?

<p>The sound becomes louder (A)</p> Signup and view all the answers

Why do humans perceive sounds of certain frequencies as louder than others?

<p>Because of the sensitivity of the human ear (A)</p> Signup and view all the answers

What determines the range of wavelengths corresponding to the audible frequency ranges for each species?

<p>Speed of sound in air (B)</p> Signup and view all the answers

What is the result of more energetic vibrations on the sound source?

<p>Higher amplitude sound waves (B)</p> Signup and view all the answers

What is the primary factor that determines the difference between a bird's chirp and a lion's roar?

<p>Frequency of the sound wave (A)</p> Signup and view all the answers

What is the relationship between the amplitude of a sound wave and the loudness of the sound?

<p>Loudness increases with increasing amplitude (B)</p> Signup and view all the answers

What is the primary factor that determines the range of audible frequencies for humans?

<p>Sensitivity of the human ear (B)</p> Signup and view all the answers

What is the primary factor that determines the tone of a sound wave?

<p>Not specified in the content (B)</p> Signup and view all the answers

What is the effect of increasing the speed of sound in air on the wavelength of a sound wave?

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

What is the primary factor that determines the range of wavelengths corresponding to the audible frequency range?

<p>Speed of sound in air (C)</p> Signup and view all the answers

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