M5 Unit2 The environment Welcometo the unit课件
文档属性
| 名称 | M5 Unit2 The environment Welcometo the unit课件 |  | |
| 格式 | zip | ||
| 文件大小 | 8.0MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 牛津译林版 | ||
| 科目 | 英语 | ||
| 更新时间 | 2014-09-25 22:19:21 | ||
图片预览
文档简介
课件47张PPT。Welcome to our classWelcome to the unitUnit 2The environmentThis is the earth,this is our home!What did you see from this flash?The beautiful earth is our home. Do you love to live here?Remains of PompeiiWhat caused the destruction of the city of Pompeii?Can you think of other natural disasters that damage the environment?earthquakeearthquakefire typhoon
or
hurricanesnow slideflood and drought How many kinds of natural disasters do you
know?natural disastersfire volcano earthquake drought typhoonflood hurricane tsunami more about the natural disastersHow do they damage the environment? The ashes of the volcano eruption will completely cover the region around.
Vegetations in its path will be totally wiped out.
The tsunami that ravaged South-east Asian countries in December 2004 proved just how destructive nature can be.
Thousands of people died while thousands more were left homeless.
… Global warmingWarRadiationFactitious
(人为的)
damageLeak of gas/oil/
nuclear
Acid rain
Blue-green algaeCompared with the last few years, the environment is getting worse.Water pollutionIt is estimated that over 1 billion people—about one fifth of the world’s population —don’t have enough safe drinking water. Waste water from factories and citiesWho should be blamed for this?If you were in charge of the factory,
how would you deal with it?Yesterday and todayAir pollution causes more than 2.7 million deaths in the world every dayAir pollutionproblemsWhere does the smoke come from?Suppose this factory is in your
neighbourhood, how do you think
the smoke will affect you?rubbishproblemHow do you feel when you see piles
of rubbish like this?In your daily life, how do people deal
with household garbage?What kind of rubbish do you usually find?
Deforestationproblem1.What can you see in the picture?2.What will happen if we continue cutting down so many trees? Desertification
沙漠化DeforestationDesertificationGroup discussionThe whole class is divided into 4 groups and each group will discuss about the causes, effects and solutions concerning the following 4 kinds of environmental problems.Group1: Water pollution
Group2: Air pollution
Group3: Rubbish
Group4: Deforestation-desertificationCauses:
Factories pour waste into rivers/ lakes/seas. People throw rubbish into rivers/lakes
Effects:
Many people don’t have enough clean drinking water.
Make people get sick.
Solutions:
Use new technology to make sure that factories are green and clean.
Clean the water in the rivers/lakes.
Save water in our daily life.Group 1Causes:
Factories, power stations, cars give off waste gas. Burn coal and oil.
Effects:
Make people get sick or even die.
Make the environment dirty.
Cause acid rain (酸雨).
Solutions:
The harmful smoke should be made harmless before it goes into the air.
Ride bikes more. Limit the number of cars./Make cars that don’t pollute the air.
Group 2Causes:
Throw rubbish in the streets or in nature.
Buy products that use too much packaging.
Effects:
Make the environment ugly, dirty and even dangerous.
Cause diseases.
Solutions:
Throw waste in rubbish bins.
Buy products that use less packaging.
Recycle as much as possible.Group 3Causes:
Cut too much wood. Rich surface soil will be blown away by wind or washed by rain down to hills and into rivers.
Effects:
Cause bad weather (sandstorm).
Lands or mountains turn into desert.
Cause starvation.
Solutions:
Use less wood.
Plant more new trees.
Try to make desert areas become green land.
Group 4What can we do to protect the environment?Pass lawsPlant treesApril 22ndEarthdayControl sandWhat have we done?Competition As a student, what can you do to reduce pollution and protect our environment? GROUP WORK
GROUP A: GROUP B:rubbishplate××basketcleanDiscussion???What should we do to protect the environment in our daily life? Using the handkerchief instead of
the paper napkin. 2. Using paper bags instead of plastic bags.3. Don’t use one-off chopsticks.4. Go to work on foot or by bike not by car.5. Throw cans, bottles, paper and plastic into
the dustbin.
…The recycling symbol Buying recycled productsRecycled productsrecycling the bottlesPaper recycling your paper could
become part of a
road or race-trackUsing low-flow shower headsbuying energy-efficient light bulbsreplacewith Write down what you will do to protect our environment.
.Homework
or
hurricanesnow slideflood and drought How many kinds of natural disasters do you
know?natural disastersfire volcano earthquake drought typhoonflood hurricane tsunami more about the natural disastersHow do they damage the environment? The ashes of the volcano eruption will completely cover the region around.
Vegetations in its path will be totally wiped out.
The tsunami that ravaged South-east Asian countries in December 2004 proved just how destructive nature can be.
Thousands of people died while thousands more were left homeless.
… Global warmingWarRadiationFactitious
(人为的)
damageLeak of gas/oil/
nuclear
Acid rain
Blue-green algaeCompared with the last few years, the environment is getting worse.Water pollutionIt is estimated that over 1 billion people—about one fifth of the world’s population —don’t have enough safe drinking water. Waste water from factories and citiesWho should be blamed for this?If you were in charge of the factory,
how would you deal with it?Yesterday and todayAir pollution causes more than 2.7 million deaths in the world every dayAir pollutionproblemsWhere does the smoke come from?Suppose this factory is in your
neighbourhood, how do you think
the smoke will affect you?rubbishproblemHow do you feel when you see piles
of rubbish like this?In your daily life, how do people deal
with household garbage?What kind of rubbish do you usually find?
Deforestationproblem1.What can you see in the picture?2.What will happen if we continue cutting down so many trees? Desertification
沙漠化DeforestationDesertificationGroup discussionThe whole class is divided into 4 groups and each group will discuss about the causes, effects and solutions concerning the following 4 kinds of environmental problems.Group1: Water pollution
Group2: Air pollution
Group3: Rubbish
Group4: Deforestation-desertificationCauses:
Factories pour waste into rivers/ lakes/seas. People throw rubbish into rivers/lakes
Effects:
Many people don’t have enough clean drinking water.
Make people get sick.
Solutions:
Use new technology to make sure that factories are green and clean.
Clean the water in the rivers/lakes.
Save water in our daily life.Group 1Causes:
Factories, power stations, cars give off waste gas. Burn coal and oil.
Effects:
Make people get sick or even die.
Make the environment dirty.
Cause acid rain (酸雨).
Solutions:
The harmful smoke should be made harmless before it goes into the air.
Ride bikes more. Limit the number of cars./Make cars that don’t pollute the air.
Group 2Causes:
Throw rubbish in the streets or in nature.
Buy products that use too much packaging.
Effects:
Make the environment ugly, dirty and even dangerous.
Cause diseases.
Solutions:
Throw waste in rubbish bins.
Buy products that use less packaging.
Recycle as much as possible.Group 3Causes:
Cut too much wood. Rich surface soil will be blown away by wind or washed by rain down to hills and into rivers.
Effects:
Cause bad weather (sandstorm).
Lands or mountains turn into desert.
Cause starvation.
Solutions:
Use less wood.
Plant more new trees.
Try to make desert areas become green land.
Group 4What can we do to protect the environment?Pass lawsPlant treesApril 22ndEarthdayControl sandWhat have we done?Competition As a student, what can you do to reduce pollution and protect our environment? GROUP WORK
GROUP A: GROUP B:rubbishplate××basketcleanDiscussion???What should we do to protect the environment in our daily life? Using the handkerchief instead of
the paper napkin. 2. Using paper bags instead of plastic bags.3. Don’t use one-off chopsticks.4. Go to work on foot or by bike not by car.5. Throw cans, bottles, paper and plastic into
the dustbin.
…The recycling symbol Buying recycled productsRecycled productsrecycling the bottlesPaper recycling your paper could
become part of a
road or race-trackUsing low-flow shower headsbuying energy-efficient light bulbsreplacewith Write down what you will do to protect our environment.
.Homework