Welcome to our class - 11A2
A. Oil
B. Solar energy
C. Electricity
D. Gas
E. Wind energy
MATCHING
1
2
3
4
5
UNIT 11: SOURCES OF ENERGY
Reading
VOCABULARY
Oil, petrol, coal and gas are fossil fuels
fossil fuels [`fɔsl] [fjuəl]:
nhiên liệu hoá thạch
11.nuclear power / `nju:kliə`pauə /(n) naêng löôïng haït nhaân
17. Oil / ɔil /(n) daàu
 Oil rig (n)
Ex: Vung Tau has many oil-rigs

Windmill
Wind power
Solar panels
Solar energy
Water Power
Hydroelectric dam
Geothermal heat
/,dʒi:əu`θə:məl hi:t/
reserve (n) /ri`zə:v/
to exhaust (v) /ig`zɔ:st/
alternative (adj) /ɔ:l`tə:nətiv/
to release (v) /ri`li:s/
Vocabulary
limited (adj) /`limitid/
source (n) /sɔ:s/
energy (n) /`enədʒi/
fossil fuel (n) /`f?sl fju?l/
nhiên liệu hóa thạch
sự dự trữ, vật dự trữ
làm cạn kiệt
thay thế
thả, phóng thích
có giới hạn
không giới hạn
nguồn
năng lượng
potential (n) /pə`ten∫l/
tiềm năng
‘infinite (adj) = unlimited
WHILE-READING
Let’s listen
Listen twice times and then do the following tast
At present, most of our energy comes from fossil fuels (oil, coal, and natural gas). However, such reserves are limited. Because power demand is increasing very rapidly, fossil will be exhausted within a relatively short time. Therefore, people must develop and use alternative sources of energy
One alternative sources is nuclear energy. 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.
The sun, water, and the wind are other alternative sources of energy. The wind turns windmills and moves sailboats. It is 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 as dams cost a lot of money, water energy is expensive.

The sun releases large amounts of energy every day. This energy can be changed into electricity. Many countries use solar energy for their daily 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.

Although there are some disadvantages, the potential of alternative sources of energy is great. However, how to make full use of these sources of energy is a question for researchers all over the world.
At present, most of our energy comes from fossil fuels (oil, coal, and
natural gas). However, such reserves are limited. Because power
Demand is increasing very rapidly, fossil will be exhausted within a
relatively short time. Therefore, people must develop and use
alternative sources of energy
One alternative sources is nuclear energy. 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.
The sun, water, and the wind are other alternative sources of energy.
The wind turns windmills and moves sailboats. It is 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 as dams cost a lot of money, water energy is expensive.

The sun releases large amounts of energy every day. This energy can be changed into electricity. Many countries use solar energy for their daily 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.

Although there are some disadvantages, the potential of alternative sources of energy is great. However, how to make full use of these sources of energy is a question for researchers all over the world.
Match the words and phrases with their meanings
Key: 1-c 2-d 3-g 4-f 5-b 6-e 7-a
1
2
7
3
4
5
6
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
Unlimited
Very dangerous.
Nuclear power
Plentiful , infinite, clean and safe.
Produced only in daytime
Solar energy
Clean and safe
Must build dams , so expensive
Water power
Clean and unlimited
Not available when there is no wind
Wind power
Clean and safe
Available only in a
few places.
Geothermal heat
TASK 2: Scan the passage and write down the advantage(s) and disadvantage(s) of each alternative source of energy.
It’s unlimited.
It can be very
dangerous.
It’s not only plentiful
and infinite but also
clean and safe.
It’s only possible
during the day
time.
It’s clean and unlimited.
It’s expensive.
It’s clean and unlimited.
There’s no wind
energy when there
is no wind.
It’s available.
It’s available only
in a few places.
Nuclear
power
Solar
energy
Water
power
Wind
power
Geothermal
heat
“LUCKY ANIMAL” GAME
next
What is our major source of energy ?
Our main source of energy comes from fossil fuels.
How many sources of energy are mentioned
in the text ? What are they ?
Six sources of energy are mentioned in the text. They are: fossil fuel, nuclear energy, geothermal heat, wind power, water power, solar energy.
Which source of energy do you think has
the most potential?
I think solar energy is the most potential

Lucky animal !
Post- reading
What can we do to save energy?
What can we do to
save energy?
Suggested:

leaving class/ room/ house…?
before sleeping
at home/ in class…
…………
( light/ water/ television/ motorbike
…………)


34
GEOTHEMAL?
NUCLEAR?
WIND?
WATER?
available but only in a few places
unlimited and very dangerous
clean and unlimited but if no wind no energy
clean and unlimited but expensive.
ENERGY
Talk about sources of energy
SOLAR?
Plentiful, infinite, clean and safe but possible during the day time

1.What sources of energy have you
known?
2.What do we need energy for ?

ANSWER THE QUESTIONS
2. We need energy to cook meal,
to light, to heat, to run machines…..

They are: coal, gas, water, wind,
nuclear, geothermal heat…..
Homework:

1. Do the cloze test page 126 in the
students’ book.
2. Learn by heart new words.
3. Prepare Unit 11 . Part B : SPEAKING.


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