人教新课标选修6-Unit-4-Global-warming-公开课课件(共24张).ppt

1、 What are they?What are these buildings made of?Whats the use?greenhouse/glassA greenhouse is used for_,especially during _ weather.growing plantscold_ the heat from the sunkeeps it from _ the air upHow does a greenhouse work?trapsescapingheatsNew Words Random Phenomenon Subscribe Fuel Data Catastro

2、phe Trend opposed胡乱的胡乱的现象现象同意同意燃料燃料数据数据大灾难大灾难趋势趋势反对的反对的Fast ReadingSkim the title:THE EARTH IS BECOMING WARMER BUT DOES IT MATTER?A.The earth.B.Global warming.B.C.Becoming warmer doesnt matter.A.Newspaper B.Novel C.Magazine Who wrote the article?What is the name of the magazine?Skim the first paragr

3、aph:What are the names of the three scientists mentioned in the article?The organization of the article:IntroductionA titleBodyConclusionSkim:Para.1Para.2-3Para.4-6Para.7Match the main idea of each part:1.Everyone believes that global warming is caused by the activities of humans.2.Janice Foster bel

4、ieves that she can measure the future global rise in temperature.3.Greenhouse Gases are totally bad.FTF1.Greenhouse effect is a natural p_._ amounts of Greenhouse gases in the atmosphere.But the problem begins when we add huge q of extra carbon dioxide to the atmosphere.Therefore,more heat energy is

5、 t in the atmosphere causing the global temperature to _.Fill in the blanks about the causes of Greenhouse effect.henomenon uantities rapped go upSmallPara 4.the levels of carbon dioxide have increased greatly over the last 100 to 150 years1.Who made accurate measurements of the 2.amount of carbon d

6、ioxide?3.2.How much has increased?Charles KeelingThe carbon dioxide in the atmosphere went up from around 315 parts to around 370 parts per million.Para 5.How high will the temperature go?The amount of warming could be as low as 1 to 1.5 degrees Celsius,but it could be as high as 5 degrees.What do D

7、r.Janice Foster and the scientist George Hambley think about the consequences of global warming?Do they agree with one another?Para 6Dr.Janice Foster thinks it is serious.George Hambley thinks global warming will be mild with few bad environmental consequences.Does global warming matter?Positive eff

8、ects Negative effects 1.cause the sea level to rise2.severe storms3.floods4.droughts5.famines6.the spread of diseases7.disappearance of speciesPositive effects Negative effects 1.cause the sea level to rise2.severe storms3.floods4.droughts5.famines6.the spread of diseases7.disappearance of speciesPositive effects Negative effects 1.make plants grow quicker2.crops will produce more3.a greater range of animals4.make life betterHow to reduce greenhouse gases?The earth is becoming warmer,does it matter?