Unit4_Global_warming课件53新人教版选修6）.ppt

Unit 4;The effects of global warming ;The effects of global warming ;Energy sources? International relations? ;energy sources;stove;Wind energy is used as power to produce electricity .;where electricity is produced by burning coals.;in which oil is refined and made pure. ;a facility designed to convert nuclear energy into electricity.; on the roof of a house on a bright sunny day are used to collect solar energy, making your house warm or heating your water.;are used to keep back water and raise its level for irrigation or for producing electricity, etc.; An energy source is “renewable” when supplies of it never run out and “non-renewable” when one day they will run out. Which energy sources on your list are renewable and which are non-renewable?; ; ;What are fossil fuels?;What are these buildings made of and what is their purpose? ;How does it work?;Greenhouse gases!;The Earth Is Becoming Warmer – But Does It Matter?;Translate the following words into English: ;;Fast Reading;Sophie Armstrong wrote the magazine article. The name of the magazine is “Earth care”.;3.What do they think about global warming? Do they agree with one another?;4.What are the two graphs about?;What is the main topic of the article? The earth. B. Global warming. C. Becoming warmer doesn’t matter. ;skimming;Main ideas of each part;Detailed-Reading ; Dr. Janice Foster;George Hambley;;True or false? 1. The temperature in the last century did not seem to increase much. 2. Everyone believes that global warming is caused by the activities of humans. 3. Janice Foster believes that she can measure the future global rise in temperature.;4. The rise in carbon dioxide is causing a steady increase in global warming. 5. George Hambley believes that global warming will do good rather than harm to the earth. 6. It is clear what the effects of global warming will be.;;Global warming has attracted the world’s attention, because it affects us and will affect o