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Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
Green house effect
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  • 1. Green House Effect DEFINITION:“ It’s a phenomenon which helps to keep the earth warm enough for existence of life on it” INRODUCTION: First postulated by a Swedish chemist in 1896 In recent years it was found that Carbon dioxide has increased by 25 %
  • 2. Contnd……… Stratosphere: a thin layer of certain gases in the lower atmosphere at an average height of 30 Km. from the surface of earth This layer acts like a glass of Green House Venus has CO2 60,000 times in its atmosphere than earth and has a corresponding average temperature of 850 F Mars has no CO2 and its average temperature is 24 F
  • 3. Atmosphere: ( Layers ) GEOSPHERE / EARTH TROPOSHERE………..First 08 miles Concerned with weather formation, temperature changes and air movements, Temp. falls with ascent at a rate of 1 F for every 100 meters TROPOPAUSE…………Next 10 miles There is no fall of temperature with ascent STRATOSPHERE………Next 40 miles Its lower portion is Ozone layer
  • 4. Contnd……… IONOSPHERE……….Next 220 Miles Contains charged particles or Ions in it Has two layers (upper & lower) Lower layer reflects radio-waves back to the earth & makes long range broadcastings possible
  • 5. Contnd……. VACUUM…………Next all space INTERPLANETARY SPACE……Starts at 10,000 miles from earth GREEN HOUSE LAYERS……..First 25 miles from Earth BIOSHERE……Part of the earth, its waters & atmosphere where organisms can live
  • 6. Analysis of Green House Gases There are 40 gases which affect the Green House but important gases include:1. CO2 : It is produced by : Volcanoes Decaying Plants Breathing Burning of Organic matterIt is fixed by : Photosynthesis by plants Absorption by the Sea
  • 7. Contnd…….2. METHANE : 20 % more capacity to trap heat as compared to CO2 , It is produced by Decomposition of Organic matter Termites Swamps Cattle Farms Cattle gut
  • 8. Contnd…….3. NITROUS OXIDE : Produced by : Land clearance for Agriculture Use of Fertilizers Combustion of fossil fuel
  • 9. Contnd…….4. SO2 : It is mainly produces by Industries5. CFC (Man made Gas): Used in Aerosol spray Refrigerators Insulating Foams6. CO:7. Water Vapours:
  • 10. Causes of Global Green House Effect1. INCRESED PRODUCTION OF CO2 DUE TO :• Population Explosion• Rapid Industrialization• Increased Agricultural activities• Burning of Fossil fuels• Cutting of Forests
  • 11. Causes Contnd…..2. INCREASED PRODUCTION OF METHANE DUE TO :• Increased Agricultural activities• Natural gas burning• Decomposition of Organic matter• Bacterial activities in the gut of cattle• Termite
  • 12. Causes Contnd…..3. INCREASED PRODUCTION OF NITROUSE OXIDE DUE TO :• Land clearance• Use of Fertilizers• Fossil Fuel burning4. DEFORESTATION :
  • 13. Influences of Global Green House Effect1. Rise in temperature (3-9 F)2. Rise in Oceans level (3-5 ft.)3. Floods4. Extremes of Wheather5. Climatic changes in Tropics & Subtropics
  • 14. Effects of Ozone Depletion1. Sun Burns2. Skin Cancer3. Cataract4. Weakening of Immune System
  • 15. Acid Rain Produced due to invisible clouds of Sulpher and Nitrogen Oxides SOURCES :1. Burning of Fossil fuels2. Coal burning3. Smoking4. Factories5. Motor Vehicles exhaust
  • 16. Acid Rain Contnd….. CHEMICAL REACTION : SO2 & NO2 are converted to H2SO4 & HNO3 EFFECTS OF ACID RAIN :1. Killing of Marine life2. Destruction of Nutrients in subsoil3. Erosion of buildings & metals4. Damage of Crops5. Contamination of drinking water
  • 17. Control Measures of Global Green House Effect Energy conservation Rising the cost of fuels Developing new energy systems Forest protection / Reforestation Recovery of Methane from garbage Banning of CFC production International Conferences National Standards of Pollutants Anti Pollution measures
  • 18. Sustainable Development DEFINITION : It is the continuous development (in environment) today that will not compromise the well being of the future generations Development should continue to give food, shelter & other provisions to every body but not at the expense of Environment
  • 19. Measures to attain Sustainable Development AT PERSONAL LEVEL AT NATIONAL LEVEL AT INTERNATIONAL LEVEL

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