TEACHER: DANG DINH MINH
LONG BINH SECONDARY SCHOOL
BRAINSTORMING
BRAINSTORMING
TV Radio Refrigerator
TV Radio Refrigerator
Electrical appliances
Fan
Light
Washing machine Tumble dryer
Unit 7
Unit 7
:
:
SAVING ENERGY
SAVING ENERGY
P46: READ
•
In Western countries, electricity, gas and water are not
In Western countries, electricity, gas and water are not
luxuries
luxuries
but
but
necessities.
necessities.
Companies now realize that
Companies now realize that
consumers
consumers
want products that will not only work
want products that will not only work
effectively
effectively
,
,
but also save money.
but also save money.
•
For most North American households, lighting
For most North American households, lighting
accounts for
accounts for
10 percent to 15 percent of the electricity bill.
10 percent to 15 percent of the electricity bill.
However, this amount can be reduced by replacing an
However, this amount can be reduced by replacing an
ordinary 100-watt light
ordinary 100-watt light
bulb
bulb
with an energy-saving bulb.
with an energy-saving bulb.
These bulbs use ¼ of the electricity of a standard bulbs and
These bulbs use ¼ of the electricity of a standard bulbs and
last eight times longer. Therefore consumers can save about
last eight times longer. Therefore consumers can save about
US$7 to US$21 per bulb.
US$7 to US$21 per bulb.
•
In Europe, there is a labeling
In Europe, there is a labeling
scheme
scheme
for refrigerators,
for refrigerators,
freezers, washing machines and tumble dryers. The label
freezers, washing machines and tumble dryers. The label
tells the consumers how much energy
tells the consumers how much energy
efficiency
efficiency
each model
each model
has, compared with other appliances in the same category.
has, compared with other appliances in the same category.
•
Ultimately
Ultimately
, these innovations will save money as well as
, these innovations will save money as well as
conserve the Earth’s resources.
conserve the Earth’s resources.
STATEMENTS
STATEMENTS
Check
Check
1. In Western countries, gas is necessity.
1. In Western countries, gas is necessity.
2. Lighting accounts for 10% to 15% of the
2. Lighting accounts for 10% to 15% of the
electricity bill in most North American
electricity bill in most North American
families.
families.
3. Consumers can save 50USD per energy-
3. Consumers can save 50USD per energy-
saving bulb.
saving bulb.
4. The label tells the consumers how much
4. The label tells the consumers how much
energy efficiency.
energy efficiency.
5. These innovations won’t save any money.
5. These innovations won’t save any money.
T
F
F
T
T
T/F statements
Which of the following is the best summary of the passage?
Which of the following is the best summary of the passage?
1. Energy-saving bulbs should be used to save
1. Energy-saving bulbs should be used to save
electricity.
electricity.
2. In Western countries electricity, gas, and
2. In Western countries electricity, gas, and
water are necessities.
water are necessities.
3. North American and European countries
3. North American and European countries
are interested in saving money and
are interested in saving money and
natural resources.
natural resources.
4. Labeling schemes help save energy.
4. Labeling schemes help save energy.
ANSWER THE QUESTIONS
ANSWER THE QUESTIONS
1. What are Western consumers interested in?
1. What are Western consumers interested in?
-
-
They are interested in products that will not only work effectively,
They are interested in products that will not only work effectively,
but also save money.
but also save money.
2. What can we do to spend less on lighting?
2. What can we do to spend less on lighting?
- We can use energy-saving bulbs instead of ordinary bulbs.
- We can use energy-saving bulbs instead of ordinary bulbs.
3. Mrs. Jones uses only two ordinary bulbs and she pays US$8 for
3. Mrs. Jones uses only two ordinary bulbs and she pays US$8 for
lighting. How much will she pay if she uses two energy-
lighting. How much will she pay if she uses two energy-
savving bulbs instead?
savving bulbs instead?
- She will pay US$2.
- She will pay US$2.
4. What is the purpose of the labeling scheme?
4. What is the purpose of the labeling scheme?
- It helps the consumers know how much energy effeciency the
- It helps the consumers know how much energy effeciency the
appliances are.
appliances are.
5. Why should we save energy?
5. Why should we save energy?
- Because we will save money and conserve the Earth’s resource
- Because we will save money and conserve the Earth’s resource
Tháp Rùa tại Hà Nội tắt đèn trong Giờ Trái Đất của tác giả
Tháp Rùa tại Hà Nội tắt đèn trong Giờ Trái Đất của tác giả
Bùi Hoàng Hải
Bùi Hoàng Hải
Giờ Trái đất: Hội An tắt điện, “bật” đèn lồng
Giờ Trái đất: Hội An tắt điện, “bật” đèn lồng
•
Discuss:
What should we do to save money and natural resources ?
More ideas:
- Use solar energy instead of coal , gas and oil .
- Use energy – saving household appliances like bulbs ,
refrigerators , stoves , cookers …
- Reduce the amount of water and electricity we use .
- Turn off the faucets , the TV or radio when we do
not use them …
Home work:
Home work:
- Write down 5 sentences about how to
- Write down 5 sentences about how to
protect our environment.
protect our environment.
- Learn by heart new words.
- Learn by heart new words.
- Prepare for new lesson ( write ).
- Prepare for new lesson ( write ).