Question

prepare a brief report on ●Noise pollution
•definition
•causes
•effects
•prevention

Answer 1

Noise pollution means an unwanted or undesirable sound that leads to physical and mental problems. Noise pollution is dependent on the loudness and frequency of the sound. In fact, when the sound exceeds its limit, it becomes fatal for human and other organisms. The noise intensity is measured in decibels or dB. A person can bear the noise up to 85 decibels, after which his hearing power can be damaged.

Normally, sounds more intense than 30 decibel are called noise. Anyway, all the sounds come under noise pollution which makes the mind turbulent or restless. In fact, any unwanted noise arising in the environment, which has adverse effects on the health of the organism, is noise pollution.

In daily life, we hear different intensity of sounds, whose level ranges from 10 to 100 decibels. Considering the side effects on human health, scientists have set the maximum sound limit, ranging from 75 to 85 dB in different countries. The World Health Organization considers the sound of 45 decibels ideal for cities. But measurement of sound in most big cities exceeds 90 decibels.

Sources/Causes of Noise Pollution

The sources of noise pollution are divided into two categories:

Natural sources

The natural environment is filled with various sounds – thunderstorms, lightning, tornado, cyclone, volcanic eruptions, earthquakes, landslides, sounds produced by animals, and rapidly falling water.

Human sources

Rapid industrialization, urbanization, use of modern means of transport, population growth, and increasing scale of human activities are some of the human factors responsible for noise pollution. Both types of noise pollution, affect sleep, listening ability, physical and mental health.

Vehicular Noise: The modern means of traffic including vehicles such as buses, trucks, scooters, cars, motorcycles, trains, aircraft, firecrackers, explosives etc, pollute the atmosphere. Sound of other automated vehicles and horn, excessive use of loudspeakers for religious purposes also generate jarring noise.

Industrial Noise: Industry-businesses, factories and commercial establishments produce a variety of raucous sounds that bump into our ears and disturb our mind. Noise pollution is an integral part of the industrial environment with heavy machines used in the industries; it is on the rise with the increase in industrial urbanization.

Commercialization of residential areas: Even in non-industrial areas, there is noise in the surrounding environment due to printing, dyeing machines, repairing cars, grinding etc.

Domestic Noise: As the houses in the cities are quite adjacent, the amount of domestic noise is increasing. The noise of radio, television, instrumentation and various types of sounds are constantly occurring around us, which cause mental health problems, stress, deafness etc. Other domestic sources include noise in the kitchen, and domestic discord including scolding, shouting, crying, etc.