WELCOME TO OUR CLASS
UNIT 11: SOURCES OF ENERGY
PART A - READING
1
2
3
4
5
6
7
1. Lucky number
1
1. It is a dangerous kind of weapon that is used in war
N U C L E A R
2. When we turn on electric fans, we can have ……
and feel comfortable
W I N D
3. Lucky number
F U E L S
3. oil, gas, coal are called……..
4. It covers three - fouths of the earth
W A T E R
5. It is a new kind of material used to cook
G A S
6. We used it to light lamps
E L E C T R I C I T Y
Crosswords
BEFORE-READING
What source of energy does each picture above refer to?

wind energy
solar energy
water power
Nuclear power
What can you see in the pictures?
windmill
Solar panels
Nuclear reactors
Hydroelectric dam
What do people use those things for?
They use them to make energy.

1
2
3
4
What do you need energy for?

We need energy for every daily activities.
VOCABULARY
Windmill
sailboats
SOLAR PANELS
Hydroelectric dam:
Đập thủy điện
Nuclear:
nuclear reactors
nuclear bomb
Nguyên tử
geothermal heat:
Địa nhiệt
Oil, petrol, coal and gas are fossil fuels
fossil fuels:
nhiên liệu hoá thạch
VOCABULARY
energy [`enədʒi] (n)
= power [`pauə] (n): năng lượng
reserve [ri`zə:v]: sự dự trữ
fossil fuel [`fɔsl] [fjuəl] (n): ?
exhausted [ig`zɔ:stid](adj): cạn kiệt
nuclear [`nju:kliə] (adj): ?
geothermal heat [,dʒi:ou`θə:məl hi:t] (n) ?
release [ri`li:s]: thải ra, phóng
ra

plentiful [`plentifəl] (adj): nhiều
infinite [`infinət] (adj)
= unlimited (adj): vô tận
potential [pə`ten∫l] (n / adj): tiềm năng, có tiềm năng
alternative [ɔ:l`tə:nətiv] (adj):thay thế
to make use of: sử dụng
to make full use of: tận dụng
WHILE-READING
Read the passage
alternative - limited - energy- released - exhausted

TASK 1: Fill each blank with a suitable word.
1.Six hundred balloons were at the ceremony.
2.They are looking for __________ methods of making it.
3.People use to run machines, heat and cool their homes.
4. The food in the restaurant is cheap, but the choice is rather ______
5. Fuel supplies are nearly _________
released
alternative
energy
limited
exhausted
Paragrap 1
At present, most our energy comes from fossil fuels (oil, coal, and natural gas). However, such reserves are limited. Because power demand is increasing rapidly, fossil fuels will be exhausted within a relative short time. Therefore, people must develop and use alternative sources of energy.
TASK 2: Scan the passage and write down the advantage (s) and disadvantage (s) of each alternative source of energy.
Paragraph 2
Nuclear energy can provide enough electricity for the world’s needs for hundreds of years, but it can be very dangerous. Another alternative source of energy is geothermal heat, which comes from deep inside the earth. Scientists use this heat to make energy. However, this energy is available only in a few places in the world.
It’s plentiful
It can be very
dangerous

available in only a
few places
It is available
Paragraph 3
The wind turns windmills and moves sailboats. It is a clean source of energy, and there is lots of it. Unfortunately, if the wind does not blow, there is no wind energy. When water moves from a high place to a lower place, it makes energy. This energy is used to create electricity. Water power gives energy without pollution. However, people have to build dams to use this energy. And dams cost a lot of money, so water energy is expensive.
It’s clean, plentiful, infinite
If the wind does not blows, there is no wind energy.
It’s clean, plentiful, infinite
expensive
Paragraph 4
…The sun releases a large amount of energy every day. This energy can be changed into electricity. Many countries
use solar energy for every day life. Solar panels on the roofs of houses can create enough energy to heat or cool an entire house. Solar energy is not only plentiful and infinite but also clean and safe.
plentiful, infinite,
clean and safe
It’s only possible during the day
TASK 2: Scan the passage and write down the advantage (s) and disadvantage (s) of each alternative source of energy.
TASK 3: Answer the questions
1. What is our major source of energy ?
2. How many sources of energy are mentioned in the text, and which source of energy do you think has the most potential?
What is our major source of energy?
Our major source of energy comes from fossil fuels.
Six sources of energy are mentioned in the text. They are : Fossil fuels, Nuclear power , Solar energy , Water power , Wind power, and Geothermal heat.
How many sources of energy are mentioned in the text ? (What are they ?)
Which source of energy do you think has the most potential?
I think solar energy is the most potential.
SOURCES OF ENERGY
1
ALTERNATIVE
SOURCES
oil
3
2
4
5
6
solar
energy
wind power
gas
coal
FOSSIL Fuels
nuclear
power
geothermal
heat
water
power
Complete the summary of the reading passage by filling each
blank with a suitable word from the box.
one environment alternative limited unlimited sources energy fuels
We need energy to live and work. Our major source of (1)..……….… is oil. Oil is (2)….....… kind of fossil fuel. The amount of fossil (3) .…..…… in the world is (4)..……….… Therefore, we must save it, and at the same time, we must find new sources of energy. Geothermal heat and nuclear power are (5) ……...............sources of energy. They can give us electricity. Other alternative (6)……………are the sun, waves and water. These sources are not only (7)……………. and available but also clean and safe for the (8)………………… People should develop and use them more and more in the future.
one
fuels
limited
alternative
sources
unlimited
environment
energy
Homework
Learn new words by heart.
2. Prepare Part B : SPEAKING


Thank you very much for your attendance !
Good bye!