Noise pollution - environmental pollution, Biology

Noise Pollution - Environmental Pollution

Noise is unwanted sound or excessively high levels of sound. Noise pollution is not only an annoyance, but at sufficiently high levels, it may cause loss of hearing. Noise pollution has grown because of increased use of technology. The main sources of noise are: road traffic, railways, industrial operations, construction work, aircrafts, military artillery and ammunition and household electrical appliances. Sound or noise can affect us because of its loudness and pitch or frequency.

Frequency is the number of cycles per second called Hertz (Hz). For example, a radio station uses certain frequencies for the broadcast. The human ear is sensitive to the sound of frequency in the range of 20 to 2000Hz. Loudness is measured in decibel scale (dB), a tenfold increase in sound intensity is represented as 10 dB increase on scale.

Posted Date: 1/21/2013 5:21:05 AM | Location : United States







Related Discussions:- Noise pollution - environmental pollution, Assignment Help, Ask Question on Noise pollution - environmental pollution, Get Answer, Expert's Help, Noise pollution - environmental pollution Discussions

Write discussion on Noise pollution - environmental pollution
Your posts are moderated
Related Questions
Explain Skin changes During Kwashiorkor? In many cases, dermatosis (changes in skin) is seen. Such changes are common in areas of friction. Dark pigmented patches, akin to sun-

What is the significance of Elastic capsule chromatophore? Specialized pigmented cells on surface of the cephalopods that, by changing their shape, expose differing amounts of

Who was Gregor Mendel? The Mendel is considered the father of Genetics. He was a monk, botanist and biologist born in Austria in 1822 and who died in 1884. Throughout the years

In unilocular ovary with a single ovule the placentation is : 1. Marginal 2. Basal 3. Free Central 4. Axile Basal

OVARIES - 2 in number (didelphic). White / pinkish. Almond like. 3 cm long, 2 cm wide, 1 cm thick. Lie in the lower part of abdomen attached to dorsal wall by mesovarium.

Regarding the article "Baby Blues" which of the following is a false statement? A. Children, whose mothers underwent severe stressful episodes during pregnancy, have higher tha

Penetrating Injury Open pneumothorax (sucking chest wound)  Hemothorax  Tracheobrochiaf injury  Pulmonary contusion  Mediastinal injury

Diagrammatic representation of Implant placement Implant placementIt is located directly apical to the tooth it is replacing and not in an embrasure space. The angulati

Monomeric enzymes Monomeric enzymes are those which consist of only a single polypeptide chain, so they cannot be dissociated into smaller units. Very few monomeric enzymes are

Locomotory Structures Annelids possess three kinds of locomotory structures, namely parapodia, setae and suckers. Parapodia are segmentally arranged, lateral, hollow extensio