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Environmental Studies

Environmental Studies. Presentation by - Batch : C Group : C-3 Id no.:-132 to 138. What is Pollution ?. Definition: The introduction into the environment, by people, of substances or energy liable to cause harm to living creatures or ecological systems.

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Environmental Studies

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  1. Environmental Studies • Presentation by - • Batch : C • Group : C-3 • Id no.:-132 to 138

  2. What is Pollution ? Definition: The introduction into the environment, by people, of substances or energy liable to cause harm to living creatures or ecological systems.

  3. Pollution :- How did pollution begin? • More sophisticated lifestyles. • Growing needs of people. • Accelerated rates of human and economic activities.

  4. Pollution : classification Pollution Air Water Noise Land

  5. What is noise pollution? • Any unwanted sound that penetrates the environment is noise pollution.In general noise pollution refers to any noise irritating to one's ear which comes from an external source.

  6. Sources of noise pollution • Street traffic • Rail roads • Airplanes • Constructions • Consumer products

  7. Further Classification of sources of Noise Pollution • Traffic Noise(including air traffic, road traffic,sea and inland water traffic • Industries • Other miscellaneous sources.

  8. Noise levels produced by different types of traffic :-

  9. Industrial Noise:- • Industrial noises are usually produced by reciprocating or rotating or any other type of machinery.

  10. Other miscellaneous sources of noise:- It includes:- • Public Address systems(Public Functions, Navratri festival,etc.) • Sirens • Shouting of Hawkers • Playing of children

  11. Level of tolerance • Normal level of tolerance is 80dbA. • Sound level below and above this is considered to be as noise pollution.

  12.  Effects of noise pollution  • There are about 25000 hair cells in our ear which create wave in our ear, responding to different levels of frequencies. • With increasing levels of sound the cells get destroyed decreasing our ability to hear the high frequency sound.

  13. NOISE POLLUTION EFFECTS:- Major effects:- • Loss of hearing • Annoyance • Health effects • Interference with communication • Working efficiency

  14.  Be cautious from today  • Irreversible hearing loss. • Blood pressure rise of 5 to 10 mmHg on 8 hrs of exposure to even 70 db of sound level. • Hearing loss begins at 80- 90 dbA. 140 dbA is painful and 180 dbA can even kill a person. • Amplified rock music is 120 dbA. • Most of the electronic vehicles and motors are above 80 dbA level. • High noise levels may interfere with the natural cycles of animals, including feeding behavior, breeding rituals and migration paths.

  15. Symptoms of occupational hearing loss • Feeling of fullness in the ear. • Sounds may seem muffled. • Cannot hear high frequency sounds. • Ringing in the ears while listening to the high frequency sounds. • Loud noise for a long period of time, or sudden burst of sound can cause occupational hearing loss. • Hearing that does not return after an acute noise injury is called a permanent threshold shift.

  16. Actions taken and to be taken:- • There are a variety of effective strategies for mitigating adverse sound levels • Use of noise barriers. • Limitation of vehicle speeds • Alteration of roadway surface texture. • Limitation of heavy duty vehicles • Use of traffic controls that smooth vehicle flow to reduce braking and acceleration, innovative tire design and other

  17. Control of noise pollution:- • Control at receiver's end • Suppression of noise at source • Acoustic zoning • Planting of trees • Proper town zoning

  18. Ambient Noise Standards:-

  19. Legistation • Noise Regulation Rules under the Environment (Protection) Act of 1986. • Features • Industrial- 75db • Commercial- 65 db • Residential zones- 55 db • Zones of silence • No public address system after 10:00 pm and before 06:00 am.

  20. Legislating measures:- • Minimum use of amplifiers and loud speakers near silent zones. • Banning pressure horns in automobiles • Framing a separate noise pollution act

  21. What can we do to make a difference?? • Persuade • Taking the help of police. • Observe car free day on 22nd of September. • Creating awareness about the ill effects of noise pollution. • Promising oneself not to be the part of pollution creator.

  22. By:- • Dhruv Panchal (134) • Kaushal Parmar (135) • Keyur (136) • Harsh (137) • Ronit Adhikari (138) • Kushal (133) • Prakash (132)

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