(共17张PPT)
Using language
Unit 6 Earth First
Dealing with global warming
Share what you know about these expressions.
Dealing with global warming
A carbon footprint is the amount of greenhouse gases — primarily carbon dioxide
— released into the air by a particular human activity. For example, when you drive a car, the
engine burns fuel which creates a certain amount of greenhouse gases. When you heat your house with coal or electricity, you also generate greenhouse gases. Even the production of food and goods emits some quantities of greenhouse gases. Together these emissions make up a carbon footprint.
Complete the brochure (P66) with the expressions related to global warming.
Six things you can do NOW to help stop global warming
Reduce waste by choosing reusable products - get a(n) 1 _____________________, for example.
reusable water bottle
Try to reduce your 2 ___________________. Walk or ride a bike instead of taking a car.
Use 3 _______________ such as solar energy and wind power.
The less energy you use, the less carbon dioxide is released. Replacing a regular light bulb with a(n)
4 _______________ is a great start.
carbon footprint
renewable energy
LED bulb
5 __________________ is important because clean water is a limited resource. Also, we use a lot of energy to process clean water.
Planting trees can help a lot in reducing the 6 _________ ________ because trees absorb the carbon dioxide in the air.
Water conservation
greenhouse
effect
More about Climate Change
Pair Work
Discuss what you can do to help deal with global warming, using the words and expressions you have learnt.
We should turn off the lights when we leave the classroom so that we won’t have them burning all night. And remember to turn off our television, video player and computer when we are not using them.
It’s also a good behavior to turn off the taps when we find the water running. While brushing our teeth, shampooing the dog or washing the car, turn off the water until we actually need it for rinsing (冲洗).
More example about reducing Global Warming
Listening & speaking
III
Did You Know
Smog comes from the words “smoke” and “fog”, and it is used to describe the air pollution in cities caused mainly by traffic and factories. Smog can be dangerous because it causes severe breathing problems and infections.
Environmental problems to be solved
Listen to the lecture and choose the topics that are covered. (P67)
1. What the word “smog” means.
2. When the word “smog” appeared.
3. What caused smog in the past.
4. What causes smog now.
5. The effects of smog on the environment.
6. How governments try to reduce smog.
7. What will happen if we don’t reduce smog.
Listen again and complete the slides. (P67)
Smog in the past
Term created in: 1 _______
Big problem in London: 2 _______________
in December 1952
Causes of the problem: burning too much coal
and 3 __________
1900s
The Great Smog
no wind
Listen again and complete the slides. (P67)
Smog in the present
Causes of the problem: 4 _______________________
and factories
Measures: rules about using 5 ________ in factories
and 6____________________________ in
the city centre
chemicals coming from traffic
chemicals
requirements of paying to drive
Learning to learn
A polite interruption is usually framed as a request for permission to interrupt someone, often starting with If ..., May I ... or Can I ... This may be preceded with an apology such as Sorry, ... or Excuse me, ... Usually we interrupt someone when they pause for breath, or during the slight pause between spoken clauses.
Pair work
Talk about recycling
Student A: Turn to Page 84.
Student B: Turn to Page 87.
Thanks
