book 6 unit 4 readig period 1
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| 名称 | book 6 unit 4 readig period 1 |
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| 格式 | rar | ||
| 文件大小 | 4.2MB | ||
| 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 | 2008-04-23 00:00:00 | ||
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课件43张PPT。unit 4 Global WarmingCan you tell what we use energy for?
Energy lights our cities
Energy heats our buildings
Energy entertains us
( watching TV; playing computer etc.)
…Where does all the energy come from?
Wind power风力a coal power station燃煤发电站an oil refinery 炼油厂a nuclear power plant原子能发电站太阳能接受器Solar panels a hydro dam水坝What’s the difference between
wind power and coal power?Wind will never run out while
coal is a limited source.What is renewable energy and
what is non-renewable energy?Renewable or non-renewable?√Renewable or non-renewable?√The use of energyGive off carbon dioxide, other wasted gases and heat into the airThe earth is becoming warmer and warmer.
(globle warming)We use much energy in our daily life, what is the effect of using energy on our world?Greenhouse
effectHow does a greenhouse work?The greenhouse trap the heat from the sun and keeps it from escaping, which can make it heat up and so the plants can grow throughout the cold period.Greenhouse ?Pre-readingPre-reading
What is it in the picture?
It’s a greenhouse made of glass.
What is it used for?
It’s used for growing plants, especially during cold weather.
How does it work?
The air inside is warm because the glass traps the heat from the sun and keeps it from escaping. This makes the greenhouse heat up and so the plants can grow throughout the cold period.Under this greenhouse effect, what happened?The earth is becoming becomes warmer and warmer.But does it matter?Reading:
The earth is becoming warmer
-but does it matter?Task one:
1.Go through the 1st paragraph and answer:
(1)Where does this text from?
(2)Who wrote this text? 2. Skim the text and get the main idea.
A. When the “greenhouse effect” started
B. What causes the “greenhouse effect”
C. Dr. Janice Foster’s theory on the “greenhouse effect”
D. The fact that the earth is becoming warmer and different theories about it.Sophie ArmstrongA magazine named Earth CareThe text is divided into four parts.Task one:Please match the main idea
with each part and divide
the passage according to
the main idea of each part.Part one:
Part two:
Part three:
Part four:Introduce a debate over the issue of global warming. How global warming comes about.No one knows what the effects of global warming will be.Para.1Para. 2-4Para.11Para.5-10 Two different attitudes among scientists towards global warming.3. "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. The government is expected to issue a statement about the election. D. The magazine has 12 issues each year.Task two:
n. 期号n.发行n. topic 议题v. 发布Task three:
Do the T/F statements
on students’book P27.The different ideas between Dr. Janice Foster & George Hambleygo upcatastrophevery seriouspositiveproduce morea greater range of animalsTask four:How many scientists are mentioned in the text? And what is their contribution or ideas?Dr Janice FosterHe believed that people have cause the increase in the earth’s temperature through the burning of fossil fuels.and he had passive idea about global warming.Charles KeelingHe found out the amount of carbon dioxide in the atmosphere from 1957 to 1977.George HambleyHe had a positive idea about global warming.DebateABA : We shall do something about global warming.B: We shall do nothing about global warming.
Energy ?many appliances use energy. For example, cars, lights, planes……What’s energy for?Energy can lights out cities.
Energy can heats our buildings.
Energy entertains us.
Energy helps people realize many dreams.
……Where does all the energy come from?Wind powerwaternuclearThe sunWe use much energy in our daily life, what is the effect of using energy on our world?It may produce much ______gas, such as carbon dioxide. And then this gas will trap the heat from the _____and make the earth______. The earth is like the place inside the greenhouse. And we call this the ……Greenhouse effectwastedsunwarmShould we do nothing about
global warming?Debate:2. True: 3, 5, 6, 7, 8
False: 1, 2, 4, 9, 10
Correct sentences:
1. The temperature last century increased
much.
2. Not everyone believes that global
warming is caused by human activities.4. Natural gas is not a greenhouse gas
but a fossil fuel.
9. George Hambley thinks that more
carbon dioxide is a positive thing and
it will make plants grow faster.
10. It is unknown what the effects of
global warming will be.Debate
Instructions
● Get into groups of six. Decide which three in your group are going to agree with the statement
(Group A) and which three are going to disagree with the statement (Group B).● Group A discuss why they agree with the statement; Group B discuss why they disagree.
● Group A and B get together. Tell each other the reasons why agree or disagree with the statement.浓度单位What are the two graphs about?
Graph I shows the temperature increase of one degree Fahrenheit between 1860 to 2000.
Graph 2 is about the carbon dioxide content in the atmosphere, 1958--1990.While- readingParagraph 1Introduce a debating over
the issue of global warming
Paragraph 2-4
Illustrate how global
warming comes about
Paragraph 5-10List 2 different attitudes
among scientists towards GW.
Paragraph 11whether people should do
something about GW. or not.
raising a questiongiving examples,
using graphs,
explanationgive examples,
making contrastUsing a question,
leaving readers to
think over the issuegreen house effectglobal warminggreen house effectgreen house effectglobal warming
Energy lights our cities
Energy heats our buildings
Energy entertains us
( watching TV; playing computer etc.)
…Where does all the energy come from?
Wind power风力a coal power station燃煤发电站an oil refinery 炼油厂a nuclear power plant原子能发电站太阳能接受器Solar panels a hydro dam水坝What’s the difference between
wind power and coal power?Wind will never run out while
coal is a limited source.What is renewable energy and
what is non-renewable energy?Renewable or non-renewable?√Renewable or non-renewable?√The use of energyGive off carbon dioxide, other wasted gases and heat into the airThe earth is becoming warmer and warmer.
(globle warming)We use much energy in our daily life, what is the effect of using energy on our world?Greenhouse
effectHow does a greenhouse work?The greenhouse trap the heat from the sun and keeps it from escaping, which can make it heat up and so the plants can grow throughout the cold period.Greenhouse ?Pre-readingPre-reading
What is it in the picture?
It’s a greenhouse made of glass.
What is it used for?
It’s used for growing plants, especially during cold weather.
How does it work?
The air inside is warm because the glass traps the heat from the sun and keeps it from escaping. This makes the greenhouse heat up and so the plants can grow throughout the cold period.Under this greenhouse effect, what happened?The earth is becoming becomes warmer and warmer.But does it matter?Reading:
The earth is becoming warmer
-but does it matter?Task one:
1.Go through the 1st paragraph and answer:
(1)Where does this text from?
(2)Who wrote this text? 2. Skim the text and get the main idea.
A. When the “greenhouse effect” started
B. What causes the “greenhouse effect”
C. Dr. Janice Foster’s theory on the “greenhouse effect”
D. The fact that the earth is becoming warmer and different theories about it.Sophie ArmstrongA magazine named Earth CareThe text is divided into four parts.Task one:Please match the main idea
with each part and divide
the passage according to
the main idea of each part.Part one:
Part two:
Part three:
Part four:Introduce a debate over the issue of global warming. How global warming comes about.No one knows what the effects of global warming will be.Para.1Para. 2-4Para.11Para.5-10 Two different attitudes among scientists towards global warming.3. "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. The government is expected to issue a statement about the election. D. The magazine has 12 issues each year.Task two:
n. 期号n.发行n. topic 议题v. 发布Task three:
Do the T/F statements
on students’book P27.The different ideas between Dr. Janice Foster & George Hambleygo upcatastrophevery seriouspositiveproduce morea greater range of animalsTask four:How many scientists are mentioned in the text? And what is their contribution or ideas?Dr Janice FosterHe believed that people have cause the increase in the earth’s temperature through the burning of fossil fuels.and he had passive idea about global warming.Charles KeelingHe found out the amount of carbon dioxide in the atmosphere from 1957 to 1977.George HambleyHe had a positive idea about global warming.DebateABA : We shall do something about global warming.B: We shall do nothing about global warming.
Energy ?many appliances use energy. For example, cars, lights, planes……What’s energy for?Energy can lights out cities.
Energy can heats our buildings.
Energy entertains us.
Energy helps people realize many dreams.
……Where does all the energy come from?Wind powerwaternuclearThe sunWe use much energy in our daily life, what is the effect of using energy on our world?It may produce much ______gas, such as carbon dioxide. And then this gas will trap the heat from the _____and make the earth______. The earth is like the place inside the greenhouse. And we call this the ……Greenhouse effectwastedsunwarmShould we do nothing about
global warming?Debate:2. True: 3, 5, 6, 7, 8
False: 1, 2, 4, 9, 10
Correct sentences:
1. The temperature last century increased
much.
2. Not everyone believes that global
warming is caused by human activities.4. Natural gas is not a greenhouse gas
but a fossil fuel.
9. George Hambley thinks that more
carbon dioxide is a positive thing and
it will make plants grow faster.
10. It is unknown what the effects of
global warming will be.Debate
Instructions
● Get into groups of six. Decide which three in your group are going to agree with the statement
(Group A) and which three are going to disagree with the statement (Group B).● Group A discuss why they agree with the statement; Group B discuss why they disagree.
● Group A and B get together. Tell each other the reasons why agree or disagree with the statement.浓度单位What are the two graphs about?
Graph I shows the temperature increase of one degree Fahrenheit between 1860 to 2000.
Graph 2 is about the carbon dioxide content in the atmosphere, 1958--1990.While- readingParagraph 1Introduce a debating over
the issue of global warming
Paragraph 2-4
Illustrate how global
warming comes about
Paragraph 5-10List 2 different attitudes
among scientists towards GW.
Paragraph 11whether people should do
something about GW. or not.
raising a questiongiving examples,
using graphs,
explanationgive examples,
making contrastUsing a question,
leaving readers to
think over the issuegreen house effectglobal warminggreen house effectgreen house effectglobal warming