This document discusses different types of air pollution including smog, acid rain, the greenhouse effect, and damage to the ozone layer. It describes how smog forms from chemical reactions between pollutants from different sources. Acid rain occurs when pollutants combine with water droplets, and can damage trees, soils, and buildings. The greenhouse effect is caused by a buildup of carbon dioxide trapping heat, raising temperatures. Ozone layer depletion is caused by chemicals like CFCs. Causes of air pollution include vehicle emissions, industrial activities, and indoor sources like smoking and building materials. Prevention methods include public transportation, alternative energy sources, and energy conservation.

1. Presented By:
Sonal
VIII A

3. Content
• Introduction
• Types of air pollution
• Smog
• Acid rain & effect
• Green house & effect
• Effect on ozone layer
• Causes of air pollution
• preventions

4. WHAT IS AIR POLLUTION??
• Air pollution is the introduction of chemicals,
particulate matter, or biological materials that cause
harm or discomfort to humans or other living
organisms, or cause damage to the natural
environment or built environment, into the
atmosphere.

5. TYPES OF AIR POLLUTION
• There are several types of air pollution, Mainly
Indoor Air Pollution and Out Door Air Pollution.
These include smog, acid rain, the green house
effect and hole in the ozone layer.
• One type of air pollution is the release of particles
into the air.
• Another type of pollution is the release of poisonous
gases.

6. • Smog is a type of large scale outdoorSmog is a type of large scale outdoor
pollution. It is caused by chemical reactionspollution. It is caused by chemical reactions
between pollutants derived from differentbetween pollutants derived from different
sources.sources.

8. ACID RAIN
It is caused when a pollutant combines with
droplets of water in the air.
The effects of acid rain on the environment can be
serious

9. EFFECTS OF ACID RAIN
 Acid rain causes acidification of lakes and streams .
 It contributes to the damage of trees and many sensitive
forest soils.
 It accelerates the decay of building materials and paints,
including irreplaceable buildings, statues, and sculptures that
are part of our nation's cultural heritage.

11. GREEN HOUSE EFFECT
• It generally comes from the build up of carbon
dioxide gas in the atmosphere.
• Carbon dioxide is produced when fuels are
burnt.
• In this type of pollution sun rays go to the
atmosphere and they are trapped by green
houses gases. So the temperature on the earth
raise.

14. It is another result of air pollution.
Chemicals released by our activities affect the
stratosphere.
Release of CFC from heating, aerosol cans ,
refrigerator equipments remove some of the
ozone , causing “ HOLES” .

16. INDOOR AIR POLLUTIONINDOOR AIR POLLUTION
- It is more dangerous than the outdoor pollution,
because we do everything in enclosed environments
where air circulation may be restricted.
SOURCES OF INDOOR AIR POLLUTION
-TABACCO SMOKE
-COOKING AND HEATING APPLIANCES
-VAPORES FROM BUILDING MATERIALS

17. Stop Smoking or Stop Breathing

18. CAUSES OF AIR POLLUTION
 Dust raised on the ground during dust storms.
 Stone dust raised by crushing of stones in quarries.
 Smoke emitted by vehicles.
 Smoke from forest fires.

20.  Smoke raised by burning of coal in powerhouses.
 Burning of wood, cow dung cakes, garbage etc.
 Germs from coughing and sneezing.

21.  Some individuals are much more sensitive to pollutants than are
others.
 Air pollution can affect our health in many ways with both short term
and long term effects.
 Many different chemicals in the air affect the human body in negative
ways.
• Older people are highly vulnerable to diseases induced by air
pollution. Those with heart or lung disorders are under additional risk
• Children and infants are also at serious risk.
• Air pollutants such as ozone, nitrogen oxides, and sulfur dioxide also
have harmful effects on natural ecosystems. They can kill plants and
trees by destroying their leaves, and can kill animals, especially fish
in highly polluted rivers.

22. PREVENTIONS

24. • Public Transport: Whenever possible, try to travel by public transports. This
helps in two ways; prevents air pollution and increases public income. If you
are going to a nearby place, go by walking or use a bicycle, instead of using
your vehicle. The objective is to minimize the use of fuels as far as possible.
• Alternative Energy Sources: Another effective way to prevent air pollution
is to use alternative energy sources such as solar energy, hydroelectric
energy, and wind energy. Nowadays, sophisticated technologies such as wind
turbine, solar water heaters are introduced to generate electricity and other
energy forms for household uses.
• Saving Energy: Saving energy will, of course, help to prevent air pollution.
Switch off the lights, fans, air conditioners, televisions, and other appliances,
when not in use. You can also share a room with others when the air
conditioner or fan is on, instead of switching them on in every room.