Unit 4 Global warming Warming up and reading课件 （33张PPT）
文档属性
| 名称 | Unit 4 Global warming Warming up and reading课件 （33张PPT） |  | |
| 格式 | zip | ||
| 文件大小 | 3.6MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（新课程标准） | ||
| 科目 | 英语 | ||
| 更新时间 | 2018-12-23 09:38:34 | ||
图片预览
文档简介
课件33张PPT。Unit 4 ---warming up and readingGlobal warmingWe depend on energy to do many things in our daily lives. For example, energy lights our cities and heats our buildings. Make a list of things that use energy in your home.
stove light things that use energy in your home micro-wave oven cassette player heating television hairdryer video player fridge computer washing machine stoveEnergy is so important to our life, but do you know the sources of energy. Wind energy is used as power to
produce electricity . Windmillswhere electricity is produced by burning coals.The coal power stationsin which oil is refined and made pure. The Oil Refineriesa facility designed to change nuclear energy into electricity. A nuclear power plant 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.Solar panelsThe Hydro-electric dams are used to keep back water and raise its level for irrigation or for producing electricity, etc.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? Discusscoaloilnatural gaswind (wind power)sun (solar energy)uranium (nuclear energy)water (hydro-electric power)plant waste (biomass energy)geothermal energythe sea (tidal energy)non-renewablenon-renewablenon-renewablerenewablerenewablenon-renewablerenewablerenewablerenewablerenewableHave you ever seen a greenhouse?Pre-readinggreenhouseWhat is the greenhouse made and used for?They are made of glass and plants can grow in it when it is cold outside.How does it work?The glass traps the heat from the sun, making the air warm so that plants can grow better.Greenhouse gases!What’s greenhouse gases effect? Greenhouse gases perform the same fun_ction as the glass in a greenhouse --- They trap the heat of the sun and keep the air surrounding the earth warm.
It is called the greenhouse effect.The Earth Is Becoming Warmer – But Does It Matter?Fast ReadingGlance at the article and answer these questions.Sophie Armstrong wrote the magazine article. The name of the magazine is “Earth care”.2.What are the names of the three scientists mentioned in the article?They are Dr. Janice Foster, Charles Keeling and George Hambley.1.Who wrote the magazine article? What is the name of the magazine?3.What do they think about global warming? Do they agree with one another?There are some very different attitudes among scientists towards this issue.
Some think the effects will be terrible, while some others believe that we should not worry about it. 4.What are the two graphs about?Graph 1 shows the temperature increase of one degree Fahrenheit between 1860 to 2000.Graph 2 shows the carbon dioxide content in the atmosphere from 1957 to 1997.Graph 1:Graph 2:5.What is the main topic of the article?Global warming / The warming of the earth.Detailed-Reading Read the article in details and finish the following task.Questionnaires -I1.Does Sophie Armstrong support a clear opinion?
2.Does George Hambley believe that we should worry much about the global warming?No. he doesn’t state it clearly.No, he doesn’t.3. How has the global warming come about?①Human activity--- burning of fossil fuels.② Greenhouse effect--- greenhouse gases.③ Huge quantities of extra carbon dioxide---from 1957 to 1997---from around 315 parts per million to around 370 parts per million.4.What are the effects of global warming?④ Encourage a greater range of animals.①The sea level to rise.② Severe storms, droughts, famines, the spread of diseases, and destruction of species.③ Make plants grow faster. Crops will produce more.1. What is the purpose of the paragraph that is in bold?
To introduce the topic.To illustrate(阐述) points by providing evidence.2. What are the diagrams for?Questionnaires -IIIt functions as a conclusion by asking the reader to reflect on the major theme of the text and to predict what might happen in the future. 3. What is the purpose of the last paragraph of the article?The different ideas between Dr. Janice Foster & George Hambleygo upcatastrophe very seriouspositiveproducea greater range of animalsHomework Prepare the language points of
this passage and underline the
important ones.
Review the reading passage.
Finish useful words and
expressions.
stove light things that use energy in your home micro-wave oven cassette player heating television hairdryer video player fridge computer washing machine stoveEnergy is so important to our life, but do you know the sources of energy. Wind energy is used as power to
produce electricity . Windmillswhere electricity is produced by burning coals.The coal power stationsin which oil is refined and made pure. The Oil Refineriesa facility designed to change nuclear energy into electricity. A nuclear power plant 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.Solar panelsThe Hydro-electric dams are used to keep back water and raise its level for irrigation or for producing electricity, etc.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? Discusscoaloilnatural gaswind (wind power)sun (solar energy)uranium (nuclear energy)water (hydro-electric power)plant waste (biomass energy)geothermal energythe sea (tidal energy)non-renewablenon-renewablenon-renewablerenewablerenewablenon-renewablerenewablerenewablerenewablerenewableHave you ever seen a greenhouse?Pre-readinggreenhouseWhat is the greenhouse made and used for?They are made of glass and plants can grow in it when it is cold outside.How does it work?The glass traps the heat from the sun, making the air warm so that plants can grow better.Greenhouse gases!What’s greenhouse gases effect? Greenhouse gases perform the same fun_ction as the glass in a greenhouse --- They trap the heat of the sun and keep the air surrounding the earth warm.
It is called the greenhouse effect.The Earth Is Becoming Warmer – But Does It Matter?Fast ReadingGlance at the article and answer these questions.Sophie Armstrong wrote the magazine article. The name of the magazine is “Earth care”.2.What are the names of the three scientists mentioned in the article?They are Dr. Janice Foster, Charles Keeling and George Hambley.1.Who wrote the magazine article? What is the name of the magazine?3.What do they think about global warming? Do they agree with one another?There are some very different attitudes among scientists towards this issue.
Some think the effects will be terrible, while some others believe that we should not worry about it. 4.What are the two graphs about?Graph 1 shows the temperature increase of one degree Fahrenheit between 1860 to 2000.Graph 2 shows the carbon dioxide content in the atmosphere from 1957 to 1997.Graph 1:Graph 2:5.What is the main topic of the article?Global warming / The warming of the earth.Detailed-Reading Read the article in details and finish the following task.Questionnaires -I1.Does Sophie Armstrong support a clear opinion?
2.Does George Hambley believe that we should worry much about the global warming?No. he doesn’t state it clearly.No, he doesn’t.3. How has the global warming come about?①Human activity--- burning of fossil fuels.② Greenhouse effect--- greenhouse gases.③ Huge quantities of extra carbon dioxide---from 1957 to 1997---from around 315 parts per million to around 370 parts per million.4.What are the effects of global warming?④ Encourage a greater range of animals.①The sea level to rise.② Severe storms, droughts, famines, the spread of diseases, and destruction of species.③ Make plants grow faster. Crops will produce more.1. What is the purpose of the paragraph that is in bold?
To introduce the topic.To illustrate(阐述) points by providing evidence.2. What are the diagrams for?Questionnaires -IIIt functions as a conclusion by asking the reader to reflect on the major theme of the text and to predict what might happen in the future. 3. What is the purpose of the last paragraph of the article?The different ideas between Dr. Janice Foster & George Hambleygo upcatastrophe very seriouspositiveproducea greater range of animalsHomework Prepare the language points of
this passage and underline the
important ones.
Review the reading passage.
Finish useful words and
expressions.