Unit 7. Saving energy

Welcome all the teachers attend our lesson today
NGUYỄN THỊ KIM HOA
THANH HOA JUNIOR HIGH SCHOOL
Cross words
Choose the numbers and find the words and the key word
1
2
3
4
5
6
Families use it to make light and for machines.
The place where there are paddy fields.
You use less things than usual.
You use it to wash, bathe, etc…
Using it for cooking, motorbike, cars, etc….
The place where there are many high buildings and traffic.

SAVING ENERGY
LESSON 3 :
READ
( Page 60,61 )
Period 46
Unit 7 :
Friday , February 6 th , 2009
Look at these pictures and answer the questions
Gas
Water
Electricity
* Questions:
1. Are gas, water, electriccity necessary?
2. What do you do to save gas,water , electricity?
Yes, they are .
We turn off the light, the faucet ,the stove,the machines when we don’t use .
5. READ
In Western countries, electricity, gas, and water are not luxuries but necessities. Companies now realize that consumers want products that will not only work effectively, but also save money.
For most North American households,lighting account for 10 percent to 15 percent of the electricity bill. However, this amount can be reduced by replacing an ordinary 100-watt light bulb with an energy-saving bulb. These bulbs use a quarter of the electricity of standard bulbs and last eight times longer.Therefore consumers can save about US$7 to US$21 per bulb.
In Europe, there is a labeling scheme for refrigerators, freezers, washing machines and tumble dryers. The label tells the consumers how much energy efficiency each model has, compared with other appliances in the same category.
Ultimately, these innovations will save money as well as conserve the Earth’s resources .
New words
- luxury (n)
> < necessity (n)
- bulb (n)
- lighting (n)
- account for (v)
- scheme (n)
= plan (n)
- Innovation (n)
- Conserve (v)
CHECKING VOCABULARY
Answer keys :
D
G
E
B
C
A
F
1 2 3 4 5 6 7
In Western countries, electricity, gas, and water are not luxuries but necessities. Companies now realize that consumers want products that will not only work effectively, but also save money.
For most North American households, lighting account for 10 percent to 15 percent of the electricity bill. However, this amount can be reduced by replacing an ordinary 100-watt light bulb with an energy-saving bulb. These bulbs use a quarter of the electricity of standard bulbs and last eight times longer. Therefore consumers can save about US$7 to US$21 per bulb.
In Europe, there is a labeling scheme for refrigerators, freezers, washing machines and tumble dryers. The label tells the consumers how much energy efficiency each model has, compared with other appliances in the same category.
Ultimately, these innovations will save money as well as conserve the Earth’s resources .
5. READ
a) Which of the following is the best summary of the passage?
1. Energy- saving bulbs should be used to save electricity.
2. In Western countries electricity, gas, and water are necessities.
3. North American and European countries are interested in saving money and natural resources.
4. Labeling schemes help save energy .
* Explanation
=> 3 is the best answer because three others are too specific. They only cover one part of the passage.
Team A
Team B
1
2
3
4
5
6
7

What are Western consumers interested in?
-> Western consumers are interested in products that will not only work effectively but also save money.
BACK
b) Answer the questions
back
What can we do to spend less on lighting?
-> We can use energy-saving bulbs instead of ordinary 100 watt-light bulbs to spend less on lighting.
BACK
Mrs Jones uses only two ordinary bulbs and she pays US$8 for lighting. How much will she pay if she uses two energy-saving bulbs instead?
-> She will pay US$ 2 for lighting if she uses energy-saving bulbs instead.
BACK
BACK
`
What is the purpose of the labeling scheme?
-> The purpose of the labeling scheme is to help comsumers to know how efficient each model is, compared with other appliances in the same category so that they can save money and energy.
BACK
GO
b) Write the answers in your exercise book
1- Western consumers are interested in products that will not only work effectively but also save money.
2- We can use energy-saving bulbs instead of ordinary 100 watt-light bulbs to spend less on lighting.
3- She will pay US$ 2 for lighting if she uses energy-saving bulbs instead.
4-The purpose of the labeling scheme is to help comsumers to know how efficient each model is, compared with other appliances in the same category so that they can save money and energy.
Let`s have a discussion!
Group I + 3 Group 2 + 4
Why should we
save energy?
What should we do
to save energy?
We should save energy to :
- save money
- conserve the Earth’s resources.
- Protect the environment
- prevent natural disasters

To save energy we should:
- use energy saving bulbs
- turn off the lights before leaving the rooms
- reduce the light bulbs
- take a shower
HOMEWORK
2. Make a short passage about how to save electricity ( base on the passage you’ve just learnt today).
3. Prepare the next lesson: Unit 7: Write.
1. Learn new words by heart
Good bye see you again
thanks for your attendence