Golbal Warming

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causes,effects and some remidies

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Golbal Warming

  1. 1. GLOBAL WARMING
  2. 2. CAUSES <ul><li>Extensive use of fossil fuels. </li></ul><ul><li>Increase in green house gases released into the </li></ul><ul><li>atmosphere. </li></ul><ul><li>.deforestation decreases the conversion of </li></ul><ul><li>Co2 to o2 </li></ul>
  3. 4. Use of fossil fuels <ul><li>Increases the carbon composition in the atmosphere. </li></ul><ul><li>increases the amount of carbonic acid formed in the ocean that increases the Ph level of the sea water. </li></ul>
  4. 6. Green house gases <ul><li>These gases like co2,methane,nitrous oxide are responsible for trapping more infrared radiation from the sun thus increasing the global temperature levels . </li></ul><ul><li>This heat is absorbed by the oceans. </li></ul>
  5. 8. WHAT HAPPENS NEXT? .INCREASE IN OCEAN TEMPERATURE ALTERS THE NORMAL WEATHER PATTERNS OF OUR EARTH . .MELTING OF ICE CAPS INCREASES THE SEALEVEL. .THE ICE CAPS IN POLES,GLACIERS ANDOTER AREAS WHERE ICE HAS BEEN BUILDING FOR SEVERAL 1000S OF IS MELTINS.
  6. 9. Melting of ice <ul><li>It happening right now </li></ul>
  7. 10. Larsen-b ice shelf.
  8. 12. Seward in alaska
  9. 13. A vanished glacier in greenland.
  10. 14. Mount .ubinas in peru.
  11. 15. Change in weather patterns . Increase in ocean temperature alters the normal The normal weather patterns that our earth had Sustained after the last ice age. .causing cyclones of huge intensity.
  12. 16. Killer katrina
  13. 17. Hurricanes in the southernhemishere
  14. 18. Sea level rising <ul><li>rising at an average rate of 1 - 2 mm/year over the past 100 years </li></ul>
  15. 20. Population displacement <ul><li>Rising sea levels </li></ul><ul><li>Increase the risk of coastal flooding </li></ul><ul><li>(Necessitate population displacement) </li></ul><ul><li>More than half of the world's population now lives within 60km of the sea. </li></ul><ul><li>Most vulnerable regions: Nile delta in Egypt, the Ganges-Brahmaputra delta in Bangladesh, many small islands, such as the Maldives, the Marshall Islands and Tuvalu. </li></ul>
  16. 21. Direct Temperature Effects <ul><li>Increase in average temperature </li></ul><ul><li>More extreme heat waves during the summer; Less extreme cold spells during the winter </li></ul><ul><li>Harmful to those with heart problems, asthma, the elderly, the very young and the homeless </li></ul>
  17. 22. Measures on controlling the problem <ul><li>Governments </li></ul><ul><li>* set some laws to limit the amount of pollutants produced by factories </li></ul><ul><li>* develop the skills of using renewable fuels , e.g. solar energy, wind energy </li></ul>
  18. 23. Measures on controlling the problem <ul><li>Citizens </li></ul><ul><li>* reduce the use of plastic bags -> as burning plastic emit CH4 </li></ul><ul><li>* recycle the resources, e.g. plastic </li></ul><ul><li>* reduce the use of sprays -> as CFCs would be emitted out </li></ul>
  19. 24. THE END.

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