Science Give the definition [1 M]

It is the passage for the inlet and outlet of air in the lungs.

Upper end of the windpipe, below the hard part on the throat is called the voice box.

The to and fro or back and forth motion of an object is termed as vibration.

The time taken by a pendulum to complete one oscillation is called the time period.

The frequency determines the shrillness or pitch of a sound. If the frequency of vibration is higher we can say that sound is shrill.

Higher the frequency of vibration, the higher is the pitch, or shrill of the sound.

The to and fro motion of an object is called oscillation motion.

Unpleasant sounds are called noise.

Larger the amplitude of vibration, louder is the sound.

In humans, the sound is produced by the larynx.

A thin membrane which is stretched tightly to receive the waves bf sound at the end of ear canal.

The maximum distance to which a vibrating body moves on either side of its mean position is called the amplitude of vibration.

The presence of excessive or unwanted sound in the atmosphere is called noise pollution.

The number of oscillations or vibrations per second is called the frequency of oscillation.