Multiple choice general knowledge science & technology

Sound is:

  1. Vibration of air

  2. Photons of sound

  3. noise measured in bels

  4. All the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sound is produced by the vibration of air molecules or any medium. These vibrations create pressure waves that our ears detect as sound. 'Photons of sound' is incorrect - photons are particles of light, not sound. Loudness is measured in decibels, not bels, making option C inaccurate.

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