Unit4_Global_warming课件11(新人教版选修6）.ppt

Unit 4 ;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.;Guess it!;What source of energy?;Geothermal (地热的) Energy Plant; 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?;Things that use energy in your home;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?;Fast Reading;It has a title, a first paragraph that runs across the page and is in bold, the main text in two columns, graphs/diagrams, two quotes.;Reading comprehension;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?;5.What is the main topic of the article?;1.The temperature last century didn’t increase much. 2.Everyone believes that global warming is caused by the activities of humans. 3.Janice Foster believes that global warming is caused by burning fossil fuels. 4.Natural gas is a greenhouse gas. 5.Carbon dioxide is a byproduct of burning fossil fuels. 6.People accept Charles Keeling’s data because he took accurate measurements. ;Detailed-Reading ;listening;2. But there are some very different attitudes among scientists towards this issue.”“issue here means the same as the one in___ .A. I bought the new stamp the day of its issue. B. They are talking about one of the key issues in the election campaign.C