unit 7 saving energy lesson 2

Energy
gas




Unit 7
Unit 7
Saving energy
Saving energy
READ
READ




vocabulary
vocabulary
a bulb : bóng đèn tròn
a bulb : bóng đèn tròn




a category: loại hạng.

a category: loại hạng.
>< necessities:
>< necessities:
hàng nhu yếu phẩm
hàng nhu yếu phẩm
luxuries(pl.n):
luxuries(pl.n):
hàng xa xỉ phẩm
hàng xa xỉ phẩm
an innovation:
an innovation:
sáng chế mới
sáng chế mới
a labeling scheme:
a labeling scheme:
hệ thống nhãn
hệ thống nhãn
vocabulary
vocabulary
a consumer
a consumer
: người tiêu dùng
: người tiêu dùng
a bulb : bóng đèn tròn
a bulb : bóng đèn tròn


Matching
Matching
1.

1.
a category
a category
2. a consumer
2. a consumer
3. luxuries
3. luxuries
4.
4.
necessities
necessities
5. a labeling scheme
5. a labeling scheme
6. a bulb
6. a bulb
7. an innovation
7. an innovation
a) h
a) h
àng xa xí phẩm
àng xa xí phẩm


b) loại, hạng
b) loại, hạng
c) h
c) h
àng nhu yếu phẩm
àng nhu yếu phẩm

d) n
d) n
gười tiêu dùng
gười tiêu dùng
e) hệ thống nhãn
e) hệ thống nhãn
f) sáng chế mới
f) sáng chế mới
g) bóng đèn tròn
g) bóng đèn tròn


Which of the following is the best summary of
Which of the following is the best summary of
the passage?
the passage?
1.
1.
Energy- saving bulbs should be used to save
Energy- saving bulbs should be used to save
electricity.
electricity.
2.
2.
In Western countries electricity, gas, and
In Western countries electricity, gas, and
water are necessities.
water are necessities.
3.

3.
North American and European countries are
North American and European countries are
interested in saving money and natural
interested in saving money and natural
resources.
resources.
4.
4.
Labeling schemes help saving energy.
Labeling schemes help saving energy.




In Western countries, electricity, gas, and water are not luxuries
In Western countries, electricity, gas, and water are not luxuries
but necessities. Companies now realize that consumers want
but necessities. Companies now realize that consumers want
products that will not only work effectively, but also save
products that will not only work effectively, but also save
money.
money.


For most North American households, lighting accounts for 10
For most North American households, lighting accounts for 10
percent to 15 percent of electricity bill. However, this amount
percent to 15 percent of electricity bill. However, this amount
can be reduced by replacing an ordinary 100 watt light bulb

can be reduced by replacing an ordinary 100 watt light bulb
with an energy- saving bulb. These bulbs use a quarter of the
with an energy- saving bulb. These bulbs use a quarter of the
electricity of standard bulbs and last eight times longer.
electricity of standard bulbs and last eight times longer.
Therefore consumers can save about US$7 to US$21 per bulb.
Therefore consumers can save about US$7 to US$21 per bulb.


In Europe, there is a labeling scheme for refrigerators freezers,
In Europe, there is a labeling scheme for refrigerators freezers,
washing machines and tumble dryers. The label tells the
washing machines and tumble dryers. The label tells the
consumers how much energy efficiency each model has,
consumers how much energy efficiency each model has,
compared with other appliances in the same category.
compared with other appliances in the same category.


Ultimately, these innovations will save money as well as
Ultimately, these innovations will save money as well as
conserve the Earth‘s resources.
conserve the Earth‘s resources.


Which of the following is the best summary of
Which of the following is the best summary of
the passage?
the passage?
1.

1.
Energy- saving bulbs should be used to save
Energy- saving bulbs should be used to save
electricity.
electricity.
2.
2.
In Western countries electricity, gas, and
In Western countries electricity, gas, and
water are necessities.
water are necessities.
3.
3.
North American and European countries are
North American and European countries are
interested in saving money and natural
interested in saving money and natural
resources.
resources.
4.
4.
Labeling schemes help saving energy.
Labeling schemes help saving energy.


Answer the questions. Write the answers in
Answer the questions. Write the answers in
your exercise book.
your exercise book.
1.

1.
What are Western consumers interested in?
What are Western consumers interested in?
2.
2.
Mrs. Jones uses only two ordinary bulbs and she
Mrs. Jones uses only two ordinary bulbs and she
pays US
pays US
$
$
8 for lighting. How much will she pay if
8 for lighting. How much will she pay if
she uses two energy- saving bulbs instead?
she uses two energy- saving bulbs instead?
3.
3.
What is the purpose of the labeling scheme?
What is the purpose of the labeling scheme?
4.
4.
Why should we save energy?
Why should we save energy?


Discussion:
Discussion:
What do you do to spend less on lighting at
What do you do to spend less on lighting at
home and at school?

home and at school?


Homework:
Homework:
1) Read the text again
1) Read the text again
2) Do the exercise 5a, and b (P61)
2) Do the exercise 5a, and b (P61)