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प्रश्न
With reference to noise pollution, answer the following:
How do the airplanes cause noise pollution?
उत्तर
Noise pollution caused by airplanes has been increasing steadily during recent years, especially in the areas close to international airports. This problem has mainly arisen because of the widespread use of heavy long-range jet aircraft. Noise made by jet planes is more disturbing than that of the old propeller driven aircraft because it is of far higher pitch. Jet noise is caused by the violent mixing of the jet of gases from the engine with the surrounding air. It is at maximum level during take-off when the engine delivers maximum thrust, and falls away rapidly as the aircraft climbs. During landing, the main source of high-frequency noise is the sound made by the air compressor and turbine blades. Aircraft pass close to the ground for quite a distance during the landing operation and this noise often constitutes a more sustained environmental nuisance than the intense noise of shorter duration produced during take-off.
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संबंधित प्रश्न
List sources of noise pollution in your surroundings.
What do you do in the following situations:
Exposed to a series of firecrackers with high sound level.
List two major harmful effects of the following:
Prolonged noise such as the one produced by crackers.
Explain the Term: Noise pollution
Noise pollution is a ______ issue.
The sound which is disagreeable to the ears is called ______.
Noise has adverse effects on our ______.
Write the answer in your own words.
What measures will you take to control noise pollution?
______ Pollution has been directly linked to stress and health impacts such as high blood pressure and hearing loss.
Unwanted disturbing sound, even if it is music next door, is noise.