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Global warming

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  • Scientists agree that the burning of fossil fuels is causing global warming. Since these fuels are burned for energy, and everyone uses energy, everyone can help stop global warming just by using less energy or energy from renewable sources!

Transcript

  • 1. Vivek Srivastava
  • 2. What is global warming?
  • 3. How Global Warming Works Carbon Dioxide (CO2) Fossil fuels (coal, oil, natural gas)
  • 4. Example of the Greenhouse Effect The Sun’s energy passes through the car’s windshield. This energy (heat) is trapped inside the car and cannot pass back through the windshield, causing the inside of the car to warm up.
  • 5. What’s the difference between “global warming” and “climate change”?
  • 6. Difference GLOBAL WARMING is the increase of the Earth’s average surface temperature due to a build-up of greenhouse gases in the atmosphere. CLIMATE CHANGE is a broader term that refers to long-term changes in climate, including average temperature and precipitation.
  • 7. Effects of Global Warming Rising Sea Level Habitat Damage and Increased Temperature Changes in Water Supply
  • 8. What’s the proof that global warming is taking place?
  • 9. Portage Glacier • Alaska 1914 Photos: NOAA Photo Collection and Gary Braasch – WorldViewOfGlobalWarming.org 2004
  • 10. Colorado River • Arizona June 2002 Dec 2003
  • 11. Why is global warming happening?
  • 12. Burning of Fossil Fuels Pollution from coal, natural gas, and oil
  • 13. When did global warming start?
  • 14. Global Atmospheric Concentration of CO2
  • 15. How is global warming measured?
  • 16. Ice Core Data CO2 Measurements Before 1958 - Antarctica
  • 17. CO2 Atmospheric Measurements CO2 Measurements Since 1958 – Mauna Loa, Hawaii
  • 18. 1000 Years of CO2 and Global Warming Temperature (Northern Hemisphere) Year Year 2000 1800 1600 1400 1200 1000 2000 1800 1600 1400 1200 1000 Parts Per Million Degree Celsius Increase CO2 Concentrations
  • 19. Global Warming: Shifting Gears
  • 20. nob a C r oT c rt e M o s nolli B i f i Goal: Reductions in 2007 CO2 Per Year
  • 21. oT c rt e Mnobr a ClnioB g G i f o s no l t a i i nob a C r Our Goal 2007 Reductions in CO2 Per Year Produce electricity efficiently Use electricity efficiently Vehicle efficiency Solar and Wind Power Biofuels Carbon capture and storage
  • 22. What’s being done now to reduce our emissions? Wind Power Solar Power Fuel-Efficiency
  • 23. What can you do to help solve the problem?
  • 24. 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.
  • 25. Be Bulb Smart—Use CFLs Incandescent What’s the difference? Compact Fluorescent 500 lbs. of coal •1,430 lbs. CO2 pollution avoided •$30 saved
  • 26. 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 turning up the heat. Offer to help your parents keep the air filters on your AC and furnace clean. Walk short distances instead of asking for a ride in the car. Plant a tree. Recycle.