文档介绍：Unit 4 Global Warming
Save the earth!
Period 1&2 Warming
up and Reading I
Work in groups ---list things as required :
1. Things that use energy around us or at any other places,( ie. light)
of energy (ie. coal)
Warming up – I ( ３m )
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)
biomass energy
How about the plants?
If it lacks solar energy, the plants…
Greenhouse
1. What is a greenhouse made of and used for?
2. How does it
work?
SO The earth is becoming warmer and warmer
Greenhouse gases!
What are greenhouse gases?
What’s greenhouse effect?
What’s wrong with our earth?
methane
Carbon dioxide
Water vapour
Greenhouse Effect
part
Main idea
Part 1 (paragraph___ )
Part 2 (paragraphs__ to __)
Part 3 (paragraph__)
Part 4 (paragraph___)
It’s up to readers to think and decide
whether people should do something
about global warming or not
Introduce a debate over the issue of global warming
Show how global warming comes about
List two different attitudes among scientists towards global warming
1
2
5
6
7