Understanding the Science of Climate Change Calvert School Sixth Grade Science.

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Presentation transcript:

Understanding the Science of Climate Change Calvert School Sixth Grade Science

What Are Greenhouse Gases? *Gases in our atmosphere that trap heat energy. *Carbon dioxide, methane, nitrous oxide, ozone *The most abundant and potent = Water Vapor! *But the real questions is which greenhouse gases are natural and which are result of population growth and urbanization?

What about the Ozone Layer, Dude? *Ozone is Oxygen 3, special gas that protects Earth from ultraviolet radiation. *Although it is a greenhouse gas, it is not directly related Global Warming. *Hole in ozone layer grew in 1970s as result of chlorofluorocarbons (CFCs) from fridges, aerosol, etc/. *International laws eliminated CFCs and hole is now shrinking!

Greenhouse Effect? *A natural effect that insulates Earth and keeps atmosphere warm *As a result of influx of additional greenhouse gases (whether man-made or natural) global warming is increasing at a faster rate. *Infrared radiation is bounced back to earth by insulating gases. *According to textbook, over last 120 years average global temps have risen over 0.5 degree Celsius.

Videos! “Futurama” Video NASA Climate Change: A Warming World

Climate Change FlowChart Natural Biological Emissions & Man-Made Carbon Emissions from Fossil Fuels Influx of Greenhouse Gases Greenhouse Effect Global Warming Climate Change Ecological Shifts that Affect Us! Socially, Financially, Economically, Agriculturally, and Environmentally

Why Such a Political Issue? Why Do You Think? Who Might Say YES its man-made! Who Might Say NO its natural! Who is Right?

Does It Matter Who Is Right? NOPE! Why? What Can WE ALL Agree on? Brainstorm with classsmates

#1 We ALL Agree that ….. The USA Needs to be Energy Independent! -USA is the third largest producer of oil, yet we still import over 60% of what we need!

#2 We ALL Agree that ….. Fossil Fuels Will Eventually Run Out! In YOUR lifetime this is going to be a serious issue …. As the supplies start to dwindle, population will continue to grow …. What will happen to the price?

#3 We ALL Agree that ….. Conservation is Inherently a Good Thing Making things more efficient and reducing costs …. What’s the argument?

Effects of Climate Change Coral Bleaching & Ocean pH Weather & Hurricanes Shrinking Ice Caps and Poles Gulf Stream & Europe

The End