Unit 4

Global warming

Warming up

高二人教新课标版选修六

List

things that use energy

sources of energy

renewable / non-renewable

Things that use energy around us or at any other places:

In a house

Things that use energy Sources of energy

lights

television

cassette player

computer

fridge

stove

washing machine

hairdryer video recorder

coal oil

natural gas

wind (power)

sun (solar energy)

water (hydro-electric power)

the sea (tidal energy)

uranium (nuclear energy)

plant waster (biomass energy)

Windmills( 风车 ), renewable

Source of energy:

A coal power station, non-renewable

An oil refinery( 精炼厂 ), non-renewable

A nuclear power plant, non-renewable

Solar panels( 太阳电池板 ), renewable

A hydro-electric dam, renewable

Geothermal ( 地热的 ) Energy Plant

Thermal( 温泉的 ) Region, Iceland

Renewable or non-renewable?

√

Renewable or non-renewable?

√

Coal Oil Natural gas Uranium

Wind (wind power) Sun (solar energy) Water (hydro-electric

power) Plant waste (biomass

energy) Hot springs or geysers

(geothermal energy) The sea (tidal energy)

Fossil fuels( 化石燃料 )

Non-renewable Renewable

Sample lists

Things that use energy

Sources of energy

Renewable / non-renewable

lightsheating

televisionvideo

recorder

cars and buses

oilcoal

natural gas

wind (wind power)

sun (solar energy)

renewable

renewable

non-renewable

non-renewable

non-renewable

fridge

stove

washing machine

hair-dryer

water( hydro-electric) renewable

plant waste (biomass energy)

renewable

hot springs (geothermal energy) renewable

the sea (tidal energy)

renewable

computer uranium (nuclear energy)

non-renewable

What is told in the picture?

What is global warming?

What cause global warming?

Greenhouse

2012

glaciers melt 冰川融化

species extinction 物种灭绝

sea level rises 海平面上升

Global warming also causes many extreme weather events.

drought

flood

typhoon

Tsunami hits Indonesia

sandstorm

Desertification

high temperature

What can we do?

Copenhagen climate change summit

carbon emission reduction

Every coin has two sides. Energy lights our cities and heats our buildings. Meanwhile, many kinds of energy sources cause pollution. How to deal with it?

renewable energy sources

solar energy

windmills

wind energy

hydro energy

geothermal energy( 地热能 )

What more things can you do?

The minimum effort is also a kind of support. 再小的力量也是一种支持。

An energy source is “renewable” when supplies of it never run out and “non-renewable” when one day they will run out.

我们称用之不竭的资源为“可更新资源”。称最终会枯竭的资源为“ 不可更新资源”。

Language points

1) run out

run out 是不及物的 , 后面不能加宾语 ,

所以没有被动。 run out of 是及物的 ,

后面必须加宾语。 如：We have run out of the ink.

= The ink has been run out of.

= The ink has run out.

2) renewable/non-renewable

可更新资源 / 不可更新资源If I can rephrase what I had just said, I

think our resource is not renewable.

如果我可以把我刚说的话重新措辞一下 ,

我变为我们的资源是不能再生的。

Homework

1. Review the new words and

expressions in this class.

2. If possible, watch the movie

2012 & write your comment.

3. Preview Reading.

Energy forms

wind powersolar powerhydropower

nuclear powerbiomassgeothermal

coalnatural gasoil

Fossil fuel

Renewable—A ；Nonrenewable—B

AAA

B

AA

化石燃料

For what purposes do we use energy?

To light our cities ；To heat our buildings ；To entertains us ( watch TV; play computer etc.) ；To run our cars and buses ；To cook meals ；

It is the use of energy that can make our life enjoyable and entertaining

negative effects of using energy

Increasing CO2 pollution

green house effect

A greenhouse

is made of glass

and is used for

growing plants,

especially during

cold weather.

What is a greenhouse made of and used for?

Picture Picture readingreading

traps the heat from the

sunkeeps it from

escapingheat up

A greenhouse

How does it work?

Picture Picture readingreading “greenhouse gases”What do you think “greenhouse

gases” do?

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.

They don't agree with each other. They don't agree with each other.

ReadingReadingWhat do they think about global warming? Do they agree with one another?

Dr. Janice Foster George Hambley

Carbon dioxide has caused the global temperature to __________. An increase of five degrees would be a ____________ and could be ______________.

More carbon dioxide is a __________ thing,which makes crops __________ and will encourage ____________________.

go up

catastrophe

very serious

positive

produce

a greater range of animals

The different ideas between Dr. Janice Foster & George Hambley

1. cause the sea level to rise

2. severe storms3. droughts4. famines5. the spread of

diseases6. destruction of

species

Positive effects

Negative effects

1. cause the sea level to rise

2. severe storms3. droughts4. famines5. the spread of

diseases6. destruction of

species

Positive effects

Negative effects

1. make plants grow faster

2. crops will produce more

3. a greater range of animals

4. make life better

Idea-sharingIdea-sharing

What will global

warming bring to us

in your opinion?

Shall we do something

about global warming?