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Global warming by MUHAMMAD FAHAD ANSARI 12IEEM 14


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Global warming by MUHAMMAD FAHAD ANSARI 12IEEM 14

  1. 1. What is global warming? The changes in the surface air temperature, referred to as the global temperature, brought about by the enhanced greenhouse effect, which is induced by emissions of greenhouse gases into the air.
  2. 2. How Global Warming Works Carbon Dioxide (CO2) Fossil fuels (coal, oil, natural gas)
  3. 3. Example of the Greenhouse Effect The Sun’s energy passes through the car’s windshield.This energy (heat)is trapped insidethe car and cannotpass back throughthe windshield,causing the insideof the car to warmup.
  4. 4. What’s the differencebetween “global warming” and “climate change”?
  5. 5. DifferenceGLOBAL WARMING CLIMATE CHANGE is the increase of the is a broader term that Earth’s average refers to long-term surface temperature changes in climate, due to a build-up of including average greenhouse gases in temperature and the atmosphere. precipitation.
  6. 6. Effects of Global Warming Rising Sea Level Increased TemperatureHabitat Damage and Changes in Water SupplySpecies Affected
  7. 7. What’s the proof thatglobal warming is taking place?
  8. 8. Portage Glacier• Alaska 1914 2004
  9. 9. Colorado River• Arizona June 2002 Dec 2003
  10. 10. Why is global warming happening?
  11. 11. Burning of Fossil Fuels Pollution from coal, natural gas, and oil
  12. 12. When did globalwarming start?
  13. 13. Global Warming graph
  14. 14. How is global warming measured?
  15. 15. Ice Core DataCO2 Measurements Before 1958 - Antarctica
  16. 16. CO2 Atmospheric MeasurementsCO2 Measurements Since 1958 – Mauna Loa,
  17. 17. Global Warming:Shifting Gears
  18. 18. Pakistan emission
  19. 19. What’s being done now to reduce our emissions? Fuel-Efficiency Solar PowerWind Power
  20. 20. We can stop global warming!
  21. 21. What can you do to help solve the problem?
  22. 22. Simple Things To Do Turn off your computer or the TV when you’re not using it.Take shorter showers. Heating water uses energy. Keep rooms cool by closing the blinds, shades, or curtains.Turn off the lights when you leave a room. Use compact fluorescent bulbs.
  23. 23. Be Bulb Smart—Use CFLs What’s the Compact Incandescent difference? Fluorescent 500 lbs. of coal •1,430 lbs. CO2 pollution avoided •$30 saved
  24. 24. Simple Things To Do Dress lightly when it’s hot instead of turning up the air conditioning. Or use a fan.Dress warmly when it’s cold instead of turningup the heat. Offer to help your parents keep the air filters on your AC and furnace clean.Walk short distances instead of asking for aride in the car. Plant a tree. Recycle.
  25. 25. Thank you