The sound is a form of energy produced by vibration, hence it requires a vibrating medium or object to transmit within the space or vacuum. Therefore, the statement "the only thing that is needed for people to hear the sounds around us is a vibrating object" is correct.
Yes, we can agree with the statement. Sound is a form of energy which is produced by vibrations. The statement of Geneva, "the only thing that is needed for people to hear the sounds around us is a vibrating object" is correct in sense of concept of sound.
The role of vibrating object is that, it acts as a medium to transfer the vibrational energy from one point to another. For example- Atmosphere consists of various air and gas molecules, which act as a vibrating object. When source emits the sound, it strikes the air/gas molecules, causes vibration and the vibration is then transferred to another molecule.
In this way, successive transmissions make the sound waves to reach human ears to give the sensation of hearing.
Thus, we can conclude that to hear the sound, one need a vibrating object for the transmission of sound waves from one point to another.
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