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Chapter: 8th Science : Chapter 6 : Sound

Noise Pollution

Any sound that is unpleasant to the ear is called noise. It is the unwanted, irritating and louder sound.

Noise Pollution

Any sound that is unpleasant to the ear is called noise. It is the unwanted, irritating and louder sound. Noise is produced by the irregular and non -periodic vibrations. Noise gives us stress. The disturbance produced in the environment by loud and harsh sounds from various sources is known as noise pollution. Busy roads, airplanes, electrical appliances such as mixer grinder, washing machine and un-tuned radio cause noise pollution. Use of loudspeakers and crackers during the festivals also contributes to the noise pollution. The major source of noise pollution is from the industries. Noise pollution is the bi -product of industrialisation, urbanisation and modern civilisation.

 

1. Health hazards due to noise pollution

Noise creates some health hazards. Some of them are listed below.

* Noise may cause irritation, stress, nervousness and headache.


* Long term exposure to noise may change the sleeping pattern of a person.

* Sustained exposure to noise may affect hearing ability. Sometimes, it leads to loss of hearing.

* Sudden exposure to louder noise may cause heart attack and unconsciousness.

* It causes lack of concentration in one’s work. Noise of horns, loud speakers, etc. , cause disturbances leading to lack of concentration.

* Noise pollution affects a person’s peace of mind. It adds to the existing tensions of modern living. These tensions results in disease like high blood pressure or short-tempered nature.

 

2. Controlling noise pollution

We studied about the harmful effects of noise pollution. It becomes necessary for us to reduce it. Noise pollution can be significantly reduced by adopting the following steps.

* Strict guidelines should be set for the use of loudspeakers on social, religious and political occasions.

* All automobiles should have effective silencers.

* People should be encouraged to refrain from excessive honking while driving.

* Industrial machines and home appliances should be properly maintained.

* All communication systems must be operated in low volumes.

* Residential areas should be free from heavy vehicles

* Green corridor belt should be set up around the industries as per the regulations of the pollution control board.

* People working in noisy factories should wear ear plugs.

* People should be encouraged to plant trees and use absorbing materials like curtains and cushions in their home.

 

3. Hearing loss

You may have hearing loss without realising it. The following are the symptoms of hearing loss.

* Ear ache

* A feeling of fullness or fluid in the ear.

* Ringing in your ears

Hearing loss is caused by various reasons.

Some of them are listed below.

* Aging

* Ear infections if not treated

* Certain medicines

* Genetic disorders

* A severe blow to the head

* Loud noise

 

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