The document discusses air pollution and its causes, effects, and methods for monitoring air quality. It defines air pollutants as particles or gases not normally found in air composition, including natural sources like fires and dust storms as well as man-made sources from burning fossil fuels. The Air Quality Index is described as a measure of pollutant levels that may impact health, ranging from good to very unhealthy air quality. Five major pollutants - carbon monoxide, sulfur dioxide, nitrogen dioxide, particulate matter, and ground-level ozone - are explained along with their sources and health effects. Methods for individuals to reduce pollution and related websites for further information are also provided.
Air pollution is the introduction of particulates, biological molecules, or other harmful gases into Earth's atmosphere, causing disease, death to humans, damage to other living organisms such as food crops, or the natural or built environment. Air pollution may come from anthropogenic or natural sources.
Air pollution is a mixture of solid particles and gases in the air. Car emissions, chemicals from factories, dust, pollen and mold spores may be suspended as particles. Ozone, a gas, is a major part of air pollution in cities. When ozone forms air pollution, it's also called smog.
Air pollution is the introduction of particulates, biological molecules, or other harmful gases into Earth's atmosphere, causing disease, death to humans, damage to other living organisms such as food crops, or the natural or built environment. Air pollution may come from anthropogenic or natural sources.
Air pollution is a mixture of solid particles and gases in the air. Car emissions, chemicals from factories, dust, pollen and mold spores may be suspended as particles. Ozone, a gas, is a major part of air pollution in cities. When ozone forms air pollution, it's also called smog.
: Air pollution is the presence of substances in ambient atmosphere, generally resulting from the activity of man in sufficient concentration, present for sufficient time and cause harmful effect on humans, plants and animals.
This presentation is about air pollution. There are various topics related to air pollution such as definition, major pollutants, causes of air pollution, effects of air pollution on earth and how to reduce air pollution.
: Air pollution is the presence of substances in ambient atmosphere, generally resulting from the activity of man in sufficient concentration, present for sufficient time and cause harmful effect on humans, plants and animals.
This presentation is about air pollution. There are various topics related to air pollution such as definition, major pollutants, causes of air pollution, effects of air pollution on earth and how to reduce air pollution.
Air Purifiers Delhi Ncr - India : Aerate Air PurifiersRajeev Tyagi
Air Purifiers Delhi is the need of hours as everyone knows that India is the most polluted country in top 10. A part china is more polluted than india but still india's capital Delhi is most pollutd city in Asia after Beijing.
Air pollution: its causes,effects and pollutantsMaliha Eesha
This presentation gives the complete detail of air, air pollution, air pollutants and their types, each pollutant in detail and its causes and effects, acid rain, methods of prevention,smog,acidification,indoor pollution and so on. It is a complete package and I hope it'll be helpful in school! :)
This a presentation about the Air pollution and its causes & effects for the educational uses
It describe the definitions, types, info diagrams, sources, effects, and their controls
I hope this science could be a benefit for anyone who search the information
Air pollution is a type of environmental pollution that affects the air and is usually caused by smoke or other harmful gases, mainly oxides of carbon, sulphur and nitrogen. ... Air pollution has been classified as a danger to human health and Earth's many ecosystems for a long time.
Learn all about Global warming and Ozone layer, find out why are we victims of global warming and what can we do to control the situation. Get a clear view of Ozone layer, Ozone Depletion as well as what to avoid in order to stop Ozone Depletion. Enjoy!!!
A decent presentaion on global warming
the temprature slide is a video .Plays in powerpoint and wps ppt .Except powerpoint 7
if it still does not plays leave your email in comment section i will mail as soon as possible
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
1.4 modern child centered education - mahatma gandhi-2.pptx
Air pollution
1.
2.
3. •Any visible or invisible particle or gas
found in the air that is not part of the
original, normal composition are called
air pollutants
4. Natural: forest fires, pollen, dust
storm
Unnatural: man-made; coal, wood and
other fuels used in cars, homes, and
factories for energy
5.
6. AQI: Air Quality Index
•Indicates whether pollutant levels in air may cause
health concerns.
•Ranges from 0 (least concern) to 500 (greatest
concern)
7. 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
exertion.
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.
8.
9. 5 M a j o r P o l l u t a n t s :
1 . . ) C a r b o n M o n o x i d e
2 . ) S u l f u r D i o x i d e
3 . ) N i t r o g e n D i o x i d e
4 . ) P a r t i c u l a t e M a t t e r
5 . ) G r o u n d L e v e l
O z o n e
10. CCaarrbboonn MMoonnooxxiiddee
•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
11. SSuullffuurr DDiiooxxiiddee
•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
12. NNiittrrooggeenn DDiiooxxiiddee
•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 infection
13. PPaarrttiiccuullaattee MMaatttteerr
•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
14. GGrroouunndd LLeevveell OOzzoonnee
•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
15.
16.
17. •Combination of gases with water vapor and
dust
•Combination of words smoke and fog
•Forms when heat and sunlight react with
gases (photochemical smog)
•Occurs often with heavy traffic, high
temperatures, and calm winds
18.
19. •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
20.
21.
22. • The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated
in all directions. Since part of this re-radiation is back towards the surface and the lower atmosphere, it results in an elevation of the
average surface temperature above what it would be in the absence of the gases.
• Solar radiation at the frequencies of visible light largely passes through the atmosphere to warm the planetary surface, which then emits this energy
at the lower frequencies of infrared thermal radiation. Infrared radiation is absorbed by greenhouse gases, which in turn re-radiate much of the
energy to the surface and lower atmosphere. The mechanism is named after the effect of solar radiation passing through glass and warming a
greenhouse, but the way it retains heat is fundamentally different as a greenhouse works by reducing airflow, isolating the warm air inside the
structure so that heat is not lost by convection.
• If an ideal thermally conductive blackbody were the same distance from the Sun as the Earth is, it would have a temperature of about 5.3 °C.
However, since the Earth reflects about 30% of the incoming sunlight, this idealized planet's effective temperature (the temperature of a blackbody
that would emit the same amount of radiation) would be about −18 °C. The surface temperature of this hypothetical planet is 33 °C below Earth's
actual surface temperature of approximately 14 °C. The mechanism that produces this difference between the actual surface temperature and the
effective temperature is due to the atmosphere and is known as the greenhouse effect.
• Earth’s natural greenhouse effect makes life as we know it possible. However, human activities, primarily the burning of fossil fuels and clearing of
forests, have intensified the natural greenhouse effect, causing global warming.
23.
24. • Global warming is the observed century-scale rise in the average temperature of Earth's climate system
. Since 1971, 90% of the increased energy has been stored in the oceans, mostly in the 0 to 700m
region. Despite the oceans' dominant role in energy storage, the term "global warming" is also used to
refer to increases in average temperature of the air and sea at Earth's surface. Since the early 20th
century, the global air and sea surface temperature has increased about 0.8 °C (1.4 °F), with about two-thirds
of the increase occurring since 1980. Each of the last three decades has been successively warmer
at the Earth's surface than any preceding decade since 1850.
• Scientific understanding of the cause of global warming has been increasing. In its
fourth assessment (AR4 2007) of the relevant scientific literature, the
Intergovernmental Panel on Climate Change (IPCC) reported that scientists were more than 90% certain
that most of global warming was being caused by increasing concentrations of greenhouse gases
produced by human activities. In 2010 that finding was recognized by the national science academies of
all major industrialized nations.
25.
26. • Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of
hydrogen ions (low pH). It can have harmful effects on plants, aquatic animals and infrastructure. Acid rain is caused by
emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids.
Governments have made efforts since the 1970s to reduce the release of sulfur dioxide into the atmosphere with positive
results. Nitrogen oxides can also be produced naturally by lightning strikes and sulfur dioxide is produced by volcanic
eruptions. The chemicals in acid rain can cause paint to peel, corrosion of steel structures such as bridges, and erosion of
stone statues.
• "Acid rain" is a popular term referring to the deposition of wet (rain, snow, sleet, fog, cloudwater, and dew) and dry
(acidifying particles and gases) acidic components. Distilled water, once carbon dioxide is removed, has a neutral pH of 7.
Liquids with a pH less than 7 are acidic, and those with a pH greater than 7 are alkaline. "Clean" or unpolluted rain has an
acidic pH, but usually no lower than 5.7, because carbon dioxide and water in the air react together to form carbonic acid, a
weak acid according to the following reaction:
27.
28.
29. •Ride your bike
•Tell your friends and family about pollution
•Make sure your parents get pollution checks on
their cars
•Ride the school bus
30. •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
