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Download The Greenhouse Effect
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2 February 2012 OBJECTIVE: Recognize the difference between greenhouse effect and global warming. INTRO: •Write Q&A in notebook: •What is a greenhouse? •Why is it made out of transparent material (material you can see through)? The Greenhouse Effect • Greenhouse effect • Greenhouse gases Greenhous e Effect Flipchart • Atmosphere traps energy reflected from Earth’s surface that keeps the Earth warm • The Earth would be very cold without it • Water vapor • Carbon dioxide • Methane • Ozone The Greenhouse Effect • Conduction • Convection • Transfer of heat between air molecules • Transfer of heat by circulation of air molecules – Warm air rises – Cold air sinks The Greenhouse Effect • Sensible heat • Latent heat energy • Heat released by conduction and convection • Liquid water absorbs energy, changes into water vapor and the energy is then carried into the atmosphere The Greenhouse Effect • Global warming • Gradual increase in global temperature due to human pollution – Burning fossil fuels (oil, gas, etc.) • As temperature’s increase, storms can become bigger and more destructive • Can change the Earth’s climate The Greenhouse Effect • Climate • Average weather conditions in an area over a long period of time The Greenhouse Effect • Greenhouse Gases generated by humans and increase global warming: – Methane • Released by livestock, coal mining and decaying organic matter • Traps more heat than carbon dioxide • Can occur naturally The Greenhouse Effect • Nitrous oxide • Has sickly sweet smell • Released from fertilizers, sewage, and auto exhaust • Can occur naturally • Chlorofluorocarbons (CFCs) • Used in aerosol cans, air conditioners and refrigerators • Destroy the ozone layer • Made ONLY by humans Global Warming Chart
