Unit 4 Global Warming

Unit 4Global Warming Period I Warming up www.themegallery.com

Things that use energy around us : www.themegallery.com

Place and The Related Energy windmills wind www.themegallery.com

Place and The Related Energy a coal power station coal www.themegallery.com

Place and The Related Energy oil refinery oil www.themegallery.com

Place and The Related Energy nuclear power plant nuclear www.themegallery.com

Place and The Related Energy solar panels solar power www.themegallery.com

Place and The Related Energy a hydro-electric dam water www.themegallery.com

Energy at Home things using energy sources of energy • Coal • Oil • Natural gas • Wind (wind power) • Sun (solar energy) • Uranium (nuclear energy) • Water (hydro-electric power) • Hot springs or geysers (geothermal energy) • The sea (tidal energy)_ • Lights • Heating • Television • Cassette player • Video recorder • Computer • Fridge • Stove • Washing machine • Hairdryer www.themegallery.com

Energy at Home renewable or not sources of energy • Coal • Oil • Natural gas • Wind (wind power) • Sun (solar energy) • Uranium (nuclear energy) • Water (hydro-electric power) • Hot springs or geysers (geothermal energy) • The sea (tidal energy)_ • Non-renewable • Non-renewable • Non-renewable • Renewable • Renewable • Non-renewable • Renewable • Renewable • Renewable www.themegallery.com

Words study Unit 4 Global warming Intensive reading www.themegallery.com

? Pre-reading WINTER Picture reading www.themegallery.com

Picture reading How does it work? trap the heat from the sun keep it from escaping warm A greenhouse www.themegallery.com

Greenhouse gases Greenhouse Greenhouse Effect www.themegallery.com

Picture reading www.themegallery.com

★ ★ Fast Reading Skim the article: Who wrote the article? What is the name of the magazine? What are the names of the three scientists mentioned in the article? Tip: In English, some nouns begin with a capital letter, such as names of people and places, titles of magazines, newspapers, stories and books, people’s titles, etc.. www.themegallery.com

Let’s check it: Sophie Armstrong Earth Care Dr Janice Foster, Charles Keeling, George Hambley www.themegallery.com

★ ★ ★ What is the writing style? A.Expositive (说明文) B. Practical (应用文） C. Argumentative(议论文） D. Narrative（记叙文）  www.themegallery.com

The organization of an expositive essay: A title Introduction Para.1 Body Para.2-5 Para.6 Conclusion www.themegallery.com

★ ★ ★ Look through the main text: Body Conclusion Introduction II Para. 2-4 I IV Para. 1 Para. 6 III Para. 5 www.themegallery.com

★ ★ ★ Match the parts with the main ideas: • Explain how global warming comes about. Part 2 • Introduce the topic of global warming. Part I It’s up to readers to think and decide whether people should do something about global warming or not. Part 4 • List two different attitudes among scientists towards global warming. Part 3 www.themegallery.com

★ ★ ★ Match the parts with the writing skills: • Usinga question, leaving readers to think over the issue Part 4 • Giving examples, using graphs, explanation Part 2 Part 3 • Giving examples, making contrast (comparison) Part 1 • Raising a question www.themegallery.com

★ ★ ★ ★ ★ ★ ★ ★ ★ The 2 graphs are used to explain points by providing . Detailed reading Read the 2 graphs: evidence Evidence or argument? www.themegallery.com

★ ★ ★ Detailed reading Read something more about the 2 graphs: The 1stgraph shows the global t between 1860 and . The temperature i and decreased over this period but on the whole it i by around one degree Fahrenheit. During this time, the earth reached its l temperature in about 1910 and its highest in . There was a steady increase in the temperature during the 20 years after 1980. We can see from the graph that the earth has become w since early last century. emperature 2000 ncreased ncreased owest 2000 armer www.themegallery.com

★ ★ ★ Detailed reading arbon The 2ndgraph shows the amount of c d in the atmosphere from to 1997. The Co2 c steadily i over this forty-year period. It went up from 315 to parts p million. ioxide 1957 ontent ncreased 370 er Tip: While reading a graph, you’d better pay attention to the numbers. www.themegallery.com

★ ★ ★ Detailed reading Are these statements true or false? 1. The temperature last century didn’t increase much. 2. It is believed that globalwarming is caused by the activities of humans. 3. Janice Foster believes that global warming is caused by burning fossil fuels. 4. George Hambley is worried about the effects of carbon dioxide on plant growth. 5. It is clear what the effects of global warming will be. F T T F F www.themegallery.com

★ ★ ★ ★ Detailed reading Read the article carefully. What do the 3 scientists think about global warming? Do they agree with one another? They don't agree with each other. www.themegallery.com

★ ★ ★ ★ Detailed reading Read the article carefully. Dr. Janice Fosterthinks the effects of global warming could be very serious. George Hambleythinks global warming will be mild with few bad environmental consequences. Charles Keelingbelieves it is the burning of more and more fossil fuels that is resulting in a big increase in carbon dioxide. 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. Charles Keeling believes it is the burning of more and more fossil fuels that is resulting in a big increase in carbon dioxide. Dr. Janice Foster thinks the effects of global warming could be very serious. George Hambleythinks global warming will be mild with few bad environmental consequences. Charles Keeling believes it is the burning of more and more fossil fuels that is resulting in a big increase in carbon dioxide. thinks the effects of global warming could be very serious. thinks global warming will be mild with few bad environmental consequences. believes it is the burning of more and more fossil fuels that is resulting in a big increase in carbon dioxide. www.themegallery.com

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Maybe… The sea level will rise www.themegallery.com

Maybe… There will be more disasters, such as… flood! Famine! forest fire! … www.themegallery.com

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Group Discussion What should our government do to slow down global warming? www.themegallery.com

1.Give money to green the surroundings and protect the forests. www.themegallery.com

2.Encourage people to find and use more renewable energy. www.themegallery.com

rare plants rare animals 3.Make laws www.themegallery.com

4.media www.themegallery.com

Let’s join hands to protect our home. One world, one dream! www.themegallery.com

Assignment • Talk about the effects of global warming. • Think about what individuals should do. • Call on people to protect the earth and design a slogan(口号）. Everyone can make a difference

Unit 4 Global Warming