2. Content
๏ฎ What is it?
๏ฎ How is it measured?
๏ฎ The measured pollutants
๏ฎ SMOG
๏ฎ Its effects.....
๏ฎ What can you Do
๏ฎ Conclusion
๏ฎ References
3.
4. โขAny visible or invisible particle or gas
found in the air that is not part of the
original, normal composition.
5. Natural: forest fires, pollen, dust
storm
Unnatural: man-made; coal, wood
and other fuels used in cars, homes,
and factories for energy
6.
7. AQI: Air Quality Index
โขIndicates whether pollutant levels in air may cause
health concerns.
โขRanges from 0 (least concern) to 500 (greatest
concern)
8. 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 151-200
Active children and adults, and people
with respiratory disease, such as
asthma, should limit prolonged outdoor
exertion, everyone else, especially
children should limit prolonged outdoor
excertion.
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.
12. Sulfur Dioxide
โขProduced when coal and fuel oil
are burned
โขPresent in power plant exhaust
โขNarrows the airway, causing
wheezing and shortness of
breath, especially in those with
asthma
13. Nitrogen Dioxide
โขReddish, brown gas
โขProduced when nitric oxide
combines with oxygen in
the atmosphere
โขPresent in car exhaust and
power plants
โขAffects lungs and causes
wheezing; increases chance
of respiratory infection
14. Particulate Matter
โขParticles of different sizes and
structures that are released into the
atmosphere
โขPresent in many sources including
fossil fuels, dust, smoke, fog, etc.
โขCan build up in respiratory system
โขAggravates heart and lung disease;
increases risk of respiratory infection
15. Ground Level Ozone
โขAt upper level, ozone shields Earth from
sunโs harmful UV rays
โขAt ground level, ozone is harmful
pollutants
โขFormed from car, power and chemical
plant exhaust
โขIrritate respiratory system and asthma;
reduces lung function by inflaming and
damaging lining of lungs
16.
17.
18. โขCombination of gases with water vapor
and dust
โขCombination of words smoke and fog
โขForms when heat and sunlight react
gases (photochemical smog)
โขOccurs often with heavy traffic,
high temperatures, and calm winds
19.
20. โข1st smog related deaths were in London
in 1873; death toll 500 people; can you
imagine how much worse the atmosphere
is now?!
โขLimits visibility
โขDecreases UV radiation
โขYellow/black color over cities
โขCauses respiratory problems and
bronchial related deaths
21.
22.
23.
24.
25.
26. ๏ฎ Efficient insulation
๏ฎ Bacteria
๏ฎ Molds and mildews
๏ฎ Viruses
๏ฎ animal dander and cat saliva
๏ฎ plants
๏ฎ house dust
๏ฎ Mites
๏ฎ Cockroaches
๏ฎ pollen
27.
28. โขRide your bike
โขTell your friends and family about pollution
โขMake sure your parents get pollution checks
on their cars
โขRide the school bus
29. โขLearn more; stay up to date
โขJoin a group to stop pollution
โขEncourage your parents to carpool to
work
โขSwitch off lights, fan, heat, etc. when
you leave the room
30.
31. CONCLUSION
๏ฎ Air pollution has long been a serious
problem in the world.
๏ฎ Without air, Earth would be unable to
sustain life.
๏ฎ Spread the Word.