Air pollution PPT
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Transcript of Air pollution PPT
Nibras Al HaqGrade: 9SMIS
No of Slides: 29
Nibras Al Haq C.M
•Any visible or invisible particle or gas found in the air that is not part of the original, normal composition.
Nibras Al Haq C.M
Natural: forest fires, pollen, dust storm
Unnatural: man-made; coal, wood and other fuels used in cars, homes, and factories for energy
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Nibras Al Haq C.M
AQI: Air Quality Index
•Indicates whether pollutant levels in air may cause health concerns.
•Ranges from 0 (least concern) to 500 (greatest concern)
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Air Quality Air Quality Index Protect Your Health
Good 0-50 No health impacts are expected when air quality is in this range.
Moderate 51-100 Unusually sensitive people should consider limiting prolonged outdoor exertion.
Unhealthy for Sensitive Groups
101-150 Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion.
Unhealthy 151-200Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion, everyone else, especially children should limit prolonged outdoor excretion.
Very Unhealthy (Alert) 201-300 Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor exertion everyone else, especially children, should limit outdoor exertion.
Nibras Al Haq C.M
Nibras Al Haq C.M
5 Major 5 Major
Pollutants:Pollutants:
1..) Carbon
Monoxide
2.) Sulfur Dioxide
3.) Nitrogen
Dioxide
4.) Particulate
Matter
5.) Ground Level
Ozone
Nibras Al Haq C.M
Carbon MonoxideCarbon Monoxide
•colorless, odorless
•produced when carbon does not burn in fossil fuels
•present in car exhaust
•deprives body of O2 causing headaches, fatigue, and impaired vision
Nibras Al Haq C.M
Sulfur DioxideSulfur Dioxide
•produced when coal and fuel oil are burned
•present in power plant exhaust
•narrows the airway, causing wheezing and shortness of breath, especially in those with asthma
Nibras Al Haq C.M
Nitrogen DioxideNitrogen Dioxide
•reddish, brown gas
•produced when nitric oxide combines with oxygen in the atmosphere
•present in car exhaust and power plants
•affects lungs and causes wheezing; increases chance of respiratory infectionNibras Al Haq C.M
Particulate MatterParticulate Matter
•particles of different sizes and structures that are released into the atmosphere
•present in many sources including fossil fuels, dust, smoke, fog, etc.
•can build up in respiratory system
•aggravates heart and lung disease; increases risk of respiratory infection
Nibras Al Haq C.M
Ground Level OzoneGround Level Ozone
•at upper level, ozone shields Earth from sun’s harmful UV rays
•at ground level, ozone is harmful pollutants
•formed from car, power and chemical plant exhaust
•irritate respiratory system and asthma; reduces lung function by inflaming and damaging lining of lungs
Nibras Al Haq C.M
Nibras Al Haq C.M
Nibras Al Haq C.M
•Combination of gases with water vapor and dust
•Combination of words smoke and fog
•Forms when heat and sunlight react gases (photochemical smog)
•Occurs often with heavy traffic, high temperatures, and calm winds
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Nibras Al Haq C.M
•1st smog related deaths were in London in 1873; death toll 500 people; can you imagine how much worse the atmosphere is now?!
•Limits visibility
•Decreases UV radiation
•Yellow/black color over cities
•Causes respiratory problems and bronchial related deaths
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Nibras Al Haq C.M
Nibras Al Haq C.M
Nibras Al Haq C.M
Nibras Al Haq C.M
Nibras Al Haq C.M
Nibras Al Haq C.M
Nibras Al Haq C.M
•Ride your bike
•Tell your friends and family about pollution
•Make sure that your car has a Catalytic Converter fixed to it.
•Make sure your parents get pollution checks on their cars.
•Travel in public vehicles like bus, train etc. Nibras Al Haq C.M
•Learn more; stay up to date
•Join a group to stop pollution
•Encourage your parents to carpool to work
•Switch off lights, fan, heat, etc. when you leave the room
Nibras Al Haq C.M
Nibras Al Haq C.M
1. Wikipedia2. Ask.com3. p4pollution.wikispaces.com4. YouTube5. Slideshare.com6. ibrary.thinkquest.org7. www.sciencedaily.com8. wunderground.com9. ecopics.com10. factmonster.com11. Google images12. photo bucket13. Facebook