Question

science project on sound pollution and its management​

Answer 1

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Answer 2

Explanation:

Noise is either natural such as thunder or man-made. The main sources of man-made noise in developed urban areas are automobiles such as motors, trucks, buses, scooters, fire engines, police cars, ambulances, etc., factories, industries, trains, air-planes, and accessory noise producers such as horns, sirens, musical instruments, TV, radio, transistors, barking of dogs, shouting, loud­speakers, etc.

There has been a considerable increase in noise from man-made sources during the last 100 years which is now doubling after every 10 years.

Sources of noise may be classified as follows:

(i) Outdoor Sources such as:

a. Road traffic noise

b. Noise around airports [peak level over 110 dB(A)]

c. Construction site noise, and noise from industries.

(ii) Indoor Source:

Indoor source implies noise from within the factory and other places of work.