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    Physics
    Grade-8
    Easy

    Question

    A louder sound is audible even if the source of sound is far away. This is because ____. 

    1. Louder sounds are of greater frequency 
    2. Louder sounds transfer a high amount of energy 
    3. Louder sounds are of smaller frequency 
    4. Louder sounds transfer a low amount of energy 

    hintHint:

    • A sound is a form of energy.
    • Loudness depends on amplitude.

    The correct answer is: Louder sounds transfer a high amount of energy 

      • The loudness of a sound depends on the amplitude of the wave.
      • The pitch depends on frequency.
      • Greater amplitude waves have more energy and greater intensity
      • Therefore they sound louder.
      • So, the correct option is b.

      Related Questions to study

      Grade-8
      Physics

      The picture below shows sound waves in different colors. Pick the color of the sound wave which is of the highest frequency. 
      Inserting image...

      The picture below shows sound waves in different colors. Pick the color of the sound wave which is of the highest frequency.