Sound Science Quiz for 9th Graders
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Questions and Answers

Which factor primarily determines the speed of sound in a medium?

  • Temperature and pressure of the medium
  • The frequency of the sound wave
  • The amplitude of the sound wave
  • Elasticity and density of the medium (correct)

    • What is the primary focus of the Ls-12 study of Sound Std÷9th?

  • The history of sound production
  • The properties and behavior of sound waves (correct)
  • The impact of sound on human health
  • The cultural significance of sound

    • What is the main reason behind the phenomenon of sound refraction?

  • Change in sound frequency with distance
  • Absorption of sound by the medium
  • Reflection of sound waves off surfaces
  • Variation in sound speed due to temperature gradient (correct)

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