INTRODUCTION Sound is a mechanical wave an oscillation of pressure transmitted through a solid‚ liquid‚ or gas‚ composed of frequencies within the range of hearing and of a level sufficiently strong to be heard‚ or the sensation stimulated in organs of hearing by such vibrations. Sound is a sequence of waves of pressure which propagates through compressible media such as air or water. (Sound can propagate through solids as well‚ but there are additional modes of propagation). During their propagation
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Definition Of Air PollutionAir pollution occurs when the air contains gases‚ dust‚ fumes or odour in harmful amounts. That is‚ amounts which could be harmful to the health or comfort of humans and animals or which could cause damage to plants and materials.The substances that cause air pollution are called pollutants. Pollutants that are pumped into our atmosphere and directly pollute the air are called primary pollutants. Primary pollutant examples include carbon monoxide from car exhausts and sulfur
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http://eschooltoday.com/pollution/noise-pollution/sources-of-noise-pollution.html Environmental pollution is one of the biggest problems the world faces today. It is an issue that troubles us economically‚ physically and everyday of our lives. The contamination of the environment is also being linked to some of the diseases that are around currently. Yet‚ most people do not know about this problem. This shows that environmental pollution is becoming an increasingly worse problem that needs to be
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Plant. The garbage emitting foul smell‚ the decaying plants and animals also cause air pollution. Hence the doctors advise the patients having lungs trouble to settle in some rural places because the air of villages is pure and free from population. Then comes sound pollution. The harsh sounds of buses‚ its‚ mopeds etc. affect our power of hearing and causes fart trouble. It has been reported that there are two villages named Biraspalli and Devadas Palli near Dum Dum airport m Calcutta where a
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Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of chemical substances or energy‚ such as noise‚ heat or light. Pollutants‚ the components of pollution‚ can be either foreign substances/energies or naturally occurring contaminants. TYPES OF POLLUTION Water Pollution As the name suggests‚ “Water Pollution” is the type of pollution that involves the contamination of various water bodies. Various aquatic creatures
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needs‚ but not every man’s greed.” ― Mahatma Gandhi “Nature is not a place to visit. It is home.” ― Gary Snyder “Destroying rainforest for economic gain is like burning a Renaissance painting to cook a meal.” ― Edward O. Wilson There’s so much pollution in the air now that if it weren’t for our lungs there’d be no place to put it all. ~Robert Orben Don’t blow it - good planets are hard to find. ~Quoted in Time We never know the worth of water till the well is dry. ~Thomas Fuller‚ Gnomologia‚
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Pollution‚ we hear it every other day at school‚ college and read about it in newspapers. So what is it? Pollution occurs when pollutants contaminate the natural surroundings; which brings about changes that affect our normal lifestyles adversely. Pollution occurs in different forms; air‚ water‚ soil‚ radioactive‚ noise‚ heat/ thermal and light. Every form of pollution has two sources of occurrence; the point and the non-point sources. The point sources are easy to identify‚ monitor and control
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In this 21st century‚ environmental issues have been everyone’s concern. The rate of pollution in our country is getting higher and has reached a dangerous level. Therefore‚ everyone must play a role in safeguarding the environment. Yet‚ before looking up for the ways to overcome this issue‚ we must find out the types of pollutions first. Firstly‚ one of them is air pollution. Nowadays‚ almost every family has at least a car at home. Although the car is convenient for our daily lives
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Pollution Pollution is the addition to the ecosystem of someting which has a detrimental effect on it. One of the most important causes of pollution is the high rate of energy usage by modern‚ growing populations. Different kinds of pollution are found. In this section we will discuss: 1. Air Pollution. 2. Water Pollution. 3. Land Pollution. Air Pollution Air pollution is the accumulation in the atmosphere of substances that‚ in sufficient concentrations‚ endanger human health or
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Pollution This swan is breeding on a heap of plastic Littering on a beach in Guyana Pollution is when something is added to the environment that is harmful or poisonous to living things. Smoke in the air from factories is a type of pollution as it is bad for the lungs when breathed in. Sewage in drinking water is another type of pollution‚ as it can make people ill because it contains germs and viruses. People living next to a building site where there is too much noise can become sick as
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