this is a ppt in which u will pollution, it types, causes, effects and how u can prevent them

1. By Bhavika

2. Content
 Definition of pollution
 Types of pollution
 Air pollution
a) Introduction b) Cause
c) Effects d) Prevention
 Water pollution
a) Introduction b) Cause
c) Effects d) Prevention

3. Content cont……….
 Land pollution
a) Introduction b) Cause
c) Effects d) Prevention
 Noise pollution
a) Introduction b) Cause
c) Effects d) Prevention

4. Definition of pollution
 Pollution is the introduction of contaminants into a
natural environment that causes
instability,disorder,harm or discomfort to the
ecosystem .
 Pollution can take the form of chemical substances or
energy such as noise, heat or light.

5. Types of pollution
 There are four types of pollution
 Air
 Water
 Land
 Noise

7. 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.

8. Causes of air pollution
o Industrialization
is the first fundamental pollution cause. Among other
things, industrialization set in motion the widespread use of
fossil fuels (oil, gas & coal) which are now the main pollution
sources.
o Population growth
Population growth is the second fundamental pollution
cause. With population numbers literally exploding around
the world, the demand for food and other goods goes up. This
demand is met by expanded production and use of natural
resources, which in its turn leads to higher levels of
environmental pollution.

9. Effects of air pollution
 Acid rain
 Green house effects
 Smog

10. How to prevent air pollution
 Carpool
 Walk or ride a bicycle
 Connect your outdoor lights to a timer or use solar
lighting.
 Wash clothes with warm or cold water instead of hot.
 Plant trees etc…….

11. Water pollution

12. What is water pollution
 Any change or modification in the physical, chemical
and biological properties of water that has a
detrimental consequence on living things is water
pollution.

13. Causes of water pollution
 About 40% of deaths worldwide are caused by water
pollution
 Water pollution is caused by organic and inorganic
industrial waste discharged in water.
 Sewage and waste water.
 Oil leakage from ships.

14. Effects of water pollution
 Diseases like Cholera
 Aquatic life gets destroyed
 Affects food chain
 Cause algae
 Less pure water to drink

15. How to prevent water pollution
 Rivers should not be used for washing clothes or
bathing animals in.
 Dams should be created.
 In sacred rivers like Ganga dead bodies shouldn’t be
thrown.

17. What is land pollution
 Land pollution is the degradation of the earth’s surface
and misuse of land resources often caused by human
activities.

18. Causes of land pollution
 Throwing garbage
 Construction
 Waste
 Industrial waste
 Mining

19. Effects of land pollution
 Agriculture
 Littering
 Climate
 Biodiversity

20. How to prevent land pollution
 More and more land should be brought under
farming.
 Trees should be planted everywhere.
 Waste matter should be disposed immediately
 Avoid drilling lands for underground water.
 Avoid using fertilizer and pesticides for farming.

22. What is noise pollution
 Noise pollution is excessive, displeasing humans or
animals or machine created noise environmental that
disrupts the activity or balance of humans and
animals.
 Noise pollution not only results to irritation and anger.

23. Causes of noise pollution
 Traffic noise
 Air craft noise
 Noise from construction and civil engineers work.
 Noise from industries
 Noise from other sources

24. Effects of noise pollution
 Hearing loss
 Sleep disturbances
 High blood pressure
 Stress

25. How to prevent noise pollution
 The government should ensure the new machines are
noise proof.
 Airports should be away from residential areas.
 ‘No horn’ boards should be put on/near school areas.
 We should talk less and work more.

26. Bibliography
 http://envis.tropmet.res.in/kidscorner/air_pollution.h
tm
 http://www.slideshare.net/SVSELEARNING/pollution
ppt