Q75 of 123 Page 254

Give two causes of noise pollution from the homes.

The causes of noise pollution are as follows:

1) Televisions running at high volumes.

2) Use of Loudspeakers in religious or other functions.

3) Use of crackers.

What is the difference between noise and music? Can music become noise sometimes?

Draw a labelled diagram of larynx and explain its functions.

What are the usual causes of the partial hearing loss suffered by a person?

How can you show that sound cannot travel through a vacuum? Draw a labelled diagram of the apparatus used.