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Unit 4 Global warming Warming up 高二人教新课标版选修六
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List things that use energy sources of energy renewable / non-renewable
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Things that use energy around us or at any other places: In a house
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Things that use energySources of energy lights television cassette player computer fridge stove washing machine hairdryer video recorder coal oil natural gas wind (power) sun (solar energy) water (hydro-electric power) the sea (tidal energy) uranium (nuclear energy) plant waster (biomass energy)
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Windmills( 风车 ), renewable Source of energy:
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A coal power station, non-renewable
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An oil refinery( 精炼厂 ), non-renewable
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A nuclear power plant, non-renewable
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Solar panels( 太阳电池板 ), renewable
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A hydro-electric dam, renewable
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Geothermal ( 地热的 ) Energy Plant
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Thermal( 温泉的 ) Region, Iceland
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Renewable or non-renewable? √
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Renewable or non-renewable? √
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Coal Oil Natural gas Uranium Wind (wind power) Sun (solar energy) Water (hydro-electric power) Plant waste (biomass energy) Hot springs or geysers (geothermal energy) The sea (tidal energy) Fossil fuels ( 化石燃料 ) Non-renewable Renewable
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Sample lists Things that use energy Sources of energy Renewable / non-renewable lights heating television video recorder cars and buses oil coal natural gas wind (wind power) sun (solar energy) renewable non-renewable
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fridge stove washing machine hair- dryer water( hydro- electric) renewable plant waste (biomass energy) renewable hot springs (geothermal energy) renewable the sea (tidal energy) renewable computer uranium (nuclear energy) non- renewable
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What is told in the picture?
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What is global warming? What cause global warming?
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Greenhouse
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2012
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glaciers melt 冰川融化 species extinction 物种灭绝 sea level rises 海平面上升
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Global warming also causes many extreme weather events. drought
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flood
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typhoon
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Tsunami hits Indonesia
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sandstorm
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Desertification
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high temperature
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What can we do? Copenhagen climate change summit
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carbon emission reduction Every coin has two sides. Energy lights our cities and heats our buildings. Meanwhile, many kinds of energy sources cause pollution. How to deal with it? renewable energy sources
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solar energy
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windmills wind energy
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hydro energy
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geothermal energy( 地热能 )
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What more things can you do? The minimum effort is also a kind of support. 再小的力量也是一种支持。
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An energy source is “renewable” when supplies of it never run out and “non-renewable” when one day they will run out. 我们称用之不竭的资源为 “ 可更新 资源 ” 。称最终会枯竭的资源为 “ 不可更新资源 ” 。 Language points
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1) run out run out 是不及物的, 后面不能加宾语, 所以没有被动。 run out of 是及物的, 后面必须加宾语。 如: We have run out of the ink. = The ink has been run out of. = The ink has run out.
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2) renewable/non-renewable 可更新资源 / 不可更新资源 If I can rephrase what I had just said, I think our resource is not renewable. 如果我可以把我刚说的话重新措辞一下, 我变为我们的资源是不能再生的。
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Homework 1. Review the new words and expressions in this class. 2. If possible, watch the movie 2012 & write your comment. 3. Preview Reading.
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Energy forms wind power solar power hydropower nuclear power biomass geothermal coal natural gas oil Fossil fuel Renewable—A ; Nonrenewable—B A A A B A A 化石燃料
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For what purposes do we use energy? To light our cities ; To heat our buildings ; To entertains us ( watch TV; play computer etc.) ; To run our cars and buses ; To cook meals ; It is the use of energy that can make our life enjoyable and entertaining
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negative effects of using energy Increasing CO2 pollution green house effect
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A greenhouse is made of glass and is used for growing plants, especially during cold weather. What is a greenhouse made of and used for?
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Picture reading traps the heat from the sun keeps it from escaping heat up A greenhous e How does it work?
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Picture reading “greenhouse gases” What do you think “greenhouse gases” do?
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Dr. Janice Foster thinks the effects of global warming could be very serious. George Hambley thinks global warming will be mild with few bad environmental consequences. They don't agree with each other. They don't agree with each other. Reading Reading What do they think about global warming? Do they agree with one another?
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Dr. Janice FosterGeorge Hambley Carbon dioxide has caused the global temperature to __________. An increase of five degrees would be a ____________ and could be ______________. More carbon dioxide is a __________ thing, which makes crops __________ and will encourage ________________ ____. go up catastrophe very serious positive produce a greater range of animals The different ideas between Dr. Janice Foster & George Hambley
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1.cause the sea level to rise 2.severe storms 3.droughts 4.famines 5.the spread of diseases 6.destruction of species Positive effects Negative effects
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1.cause the sea level to rise 2.severe storms 3.droughts 4.famines 5.the spread of diseases 6.destruction of species Positive effects Negative effects 1.make plants grow faster 2.crops will produce more 3.a greater range of animals 4.make life better
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Idea-sharing What will global warming bring to us in your opinion? Shall we do something about global warming?
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