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Global Warming

Global Warming



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    Global Warming Global Warming Presentation Transcript

    • The Truth…
      • If the ice caps keep melting at their current rate, parts of the Atlantic and Gulf coasts in the United States will be submerged underwater by 2100.
    • What is Global Warming? Sun’s energy The earth radiates some energy Greenhouse gases traps energy
      • Sun’s energy heats up the earth’ surface, affecting its weather.
      • The earth radiates some energy back into space to moderate the planet’s temperature.
      • But as industry booms on earth greenhouse gases are released into the air and trap more and more of the sun’s energy in, so the earth’s temperature rises.
    • Greenhouse Gases
      • Carbon Dioxide
      • Methane
      • Nitrous Oxide
    • Carbon Dioxide from:
      • Power plants
      • Cars
      • Trucks
      • Airplanes
      • Buildings
    • Methane
      • More than 20 times as effective as Carbon Dioxide in trapping heat in the atmosphere
      • Sources
        • Rice paddies
        • Bovine flatulence
        • Bacteria in bogs
        • Fossil fuel production
    • Nitrous Oxide
      • “ laughing gas”, used as an anaesthetic
      • Man made sources are nylon and nitric acid production, fertilizers
    • Causes of Global Warming
      • Carbon dioxide emission by humans
      • Deforestation
      • City gridlock
    • Consequences
      • Warmer temperatures
      • Drought and wildfire
      • More intense rainstorms
      • Deadly heat waves and the spread of disease
      • More powerful and dangerous hurricanes
      • Melting glaciers
      • Sea level rise
      • Ecosystem shifts and species die-off
    • Warmer Temperatures
      • Average temperatures will rise, as will the frequency of heat waves.
    • Drought and Wildfire
      • Greater evaporation particularly during summer could exacerbate drought conditions and increase the risk of wildfires.
    • More intense rainstorms
      • Warmer temperatures increase the energy of the climatic system and lead to more intense rainfall at some times and in some areas.
    • Deadly heat waves and the spread of disease
      • Global warming is expected to increase the virulence of tropical diseases as well.
    • More powerful and dangerous hurricanes
      • Warmer water in the ocean pumps more energy into tropical storms, making them more intense and potentially more destructive.
    • Melting glaciers
      • Rising global temperatures will spread the melting of glaciers and ice caps, and cause early ice thaw on rivers and lakes.
    • Sea level rise
      • As a result both of thermal expansion of the oceans and melting glaciers.
      • Loss of coastal wetlands and barrier islands and flooding in coastal communities.
    • Ecosystem shifts and species die off
      • Loss of species diversity as species that cannot adapt die off
      • Some ecosystems like mangrove forests are likely to disappear due to new warmer local climates or coastal sea level rise will not support them.
      • 1. Calculate your carbon
      • 2. Unplug your gadgets
      • 3. Use less water
      • 4. Walk to school
      • 5. Recycle your stuff
      • 6. Try fluorescent bulbs
      • 7. Buy in bulk
      • 8. Plant a tree
      • 9. Get political
      • 10. See an inconvenient truth
    • Reducing garbage
      • Switch from disposable to reusable products
      • Replace paper products
      • Avoid buying single use and small size products
    • Saving Trees
      • Save old term paper and hand outs
      • Create and use note pads
      • Use email instead of sending cards
      • Don’t accept unwanted mail
      • Better yet PLANT MORE TREES!