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
Define Total Body Potassium (TBK)? Potassium in the body is an index of body's total cell mass. A gamma counter measures the amount of a type of potassium which is assumed t

Define Classification of Carbohydrates - Monosaccharide? Monosaccharides or simple sugars are those carbohydrates that cannot be hydrolyzed into simpler carbohydrates. E.g. gl

Explain the Primary and Secondary air Pollutants a. Primary pollutants -emitted directly  Particulate matter ( Sulfur dioxide (SO 2 ) Nitrogen dioxide (NO 2 )

sub classes of class pisces

Modes of NO - 3 reduction Accordingly, there are the following three basic modes of NO - 3 reduction. Directly dependent upon photosynthesis as in cyanobacter

Importance of Forests - Habitat and Food Forests provide habitat, and food as well as protection to wildlife species against extremes of climate and help in balancing carbon d

Express the term - Amnion One of the extraembryonic membranes found in terrestrial vertebrate. The amnion is filled with fluid and the developing embryo of reptiles, birds, and

What is mechanical digestion? In molluscs, arthropods, earthworms, birds and vertebrates, in general, which organs respectively participate in this type of digestion? Mechanica

Q. Illustrate Mitral Valve Orifice Area? The normal mitral valve orifice in an adult is 4-5cm 2 when the valve is completely open in diastole. When the mitral valve orifice ar

Explain the Characteristics of Cancer? The important characteristics of cancer are excessive cellular multiplication, invasiveness and autonomy. The active process of invasion