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Sound

Question

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How do we hear different sounds?

Solution

Special organs have been designed for receiving the sound waves. The brain interpret these waves into sounds that we hear.

Our hearing organs are ears. Ears are specially designed to grab and transit sound vibrations to our brain. The outer funnel like part of the ear collects the sound waves and send them through a long canal to the inner part. These vibrations reach a thin stretched membrane called eardrum. When these vibrations touch eardrum the eardrum starts vibrating and sends these vibrations to inner ear, from which brain receives the vibration. In this way one becomes able to hear various sounds.

The below figure shows the structure of ears.

Some More Questions From Sound Chapter

State True or False:

If the amplitude of vibration is large, sound is feeble.

For human ears, the audible range is 20 Hz to 20,000 Hz.

State True or False:

The lower the frequency of vibration, the higher is the pitch.

State True or False:

Unwanted or unpleasant sound is termed as music.

State True or False:

Noise pollution may cause partial hearing impairment.

Time taken by an object to complete one oscillation is called __________.

Loudness is determined by the __________ of vibration.

The unit of frequency is ________.

Unwanted sound is called _________.

Shrillness of a sound is determined by the _________ of vibration.

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