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What is noise pollution according to physics , Unwanted answer will be reported ✖

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Answer 1

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What is Noise Pollution?

The word noise is derived from a Latin word ‘Nausea’ which means sickness in which one feels to vomit. Noise is the unpleasant and undesirable sound which leads to discomfort to human beings. The intensity of sound is measured in decibels (dB). The faintest sound which can be heard by the Human ear is 1 Db. Due to increasing noise around the civilizations; noise pollution has become a matter of concern. Some of its major causes are vehicles, aircraft, industrial machines, loudspeakers, crackers, etc. Some other appliances also contribute to noise pollution like television, transistor, radio, etc. when used at high volume

Types of Noise Pollution

Following are the three types of pollution:

• Transport Noise
• Neighbourhood Noise
• Industrial Noise

Causes and Sources of Noise Pollution

Following are the causes and sources of noise pollution:

• Industrialisation: Industrialisation has led to an increase in noise pollution as the use of heavy machinery such as generators, mills, huge exhaust fans are used, resulting in the production of unwanted noise.
• Vehicles: Increased number of vehicles on the roads are the second reason for noise pollution.
• Events: Weddings, public gatherings involve loudspeakers to play music resulting in the production of unwanted noise in the neighbourhood.
• Construction sites: Mining, construction of buildings, etc add to the noise pollution.

Noise Pollution Examples

Following are the examples of noise pollution:

• Unnecessary usage of horns
• Using loudspeakers either for religious functions or for political purposes
• Unnecessary usage of fireworks
• Industrial noise
• Construction noise
• Noise from transportation such as railway and aircraft

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Answer 2

★ Noise Pollution :

Unwanted sound is called Noise. Pollution produced in the air due to noise is called noise pollution.

★ Noise Sources :

The principal sources of noise may be classified as surface transportation noise , aircraft noise , industrial noise , noise due to construction sites and noise at home. There are three types of noises.They are :-

❥ Air borne noise : The noise carried by air that enters into the hall from outside through open windows , doors and ventilators is called Air - Borne noise.

❥Structure - borne noise : Structure - borne noises are produced inside the hall itself and conveyed through the structure.Any loose fitting inside the building vibrates and produces noises.Other activities such as drilling , hammering , operating machinary inside the building , moving of furniture etc , also produce Structure - borne noise.

❥ Inside Noise : The noises which are produced inside the hall are called inside noises. They are produced due to machinery like television sets , automatic washers , air - conditioners , typewriters etc , in the hall.

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