WELCOME TO OUR CLASS !
CLASS 11T1

1.What source of energy does each picture above refer to?
Wind energy
Solar energy
Water energy
2. What do we need energy for?
-> We need energy to cook meals, to light, heat or cool the house and to run machines…

UNIT 11: SOURCES OF ENERGY

PART A - READING
Monday, February 20th, 2012
Teaching Class: 11T1

I/ Vocabulary

Unit 11: SOURCES OF ENERGY
Lesson: Reading
Oil, petrol, coal and gas are fossil fuels
fossil fuel (n):
nhiên liệu hoá thạch

I/ Vocabulary

Unit 11: SOURCES OF ENERGY
Lesson: Reading
Geothermal heat is the thing inside the earth that people use to make energy
 Geothermal heat (n):
địa nhiệt
What is the synonym of << unlimitted >>?
 infinite (adj):

I/ Vocabulary

không giới hạn
People use hydroelectric dam to make water power
Đập thủy điện

I/ Vocabulary

hydroelectric dam (n):
Solar panel is used to make solar energy
Tấm thu năng lượng mặt trời

I/ Vocabulary

Solar panel (n):
Windmill is used to change the power of the wind into electricity

I/ Vocabulary

cối xay gió
 Windmill (n):

I/ Vocabulary

Unit 11: SOURCES OF ENERGY
Lesson: Reading
Checking new words

fossil fuel (n):
nhiên liệu hoá thạch
 geothermal heat (n):
địa nhiệt
 infinite (adj):
không giới hạn
đập thủy điện
hydroelectric dam (n):
tấm thu năng lượng mặt trời
solar panel (n):
cối xay gió
 windmill (n):
Write down please!
Read the passage and then do the tasks that follow
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 fuels will be exhausted within a relatively short time. Therefore, people must develop and use alternative sources of energy.
One alternative source 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 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 the lower place, it makes energy.This energy is used to create electricity. Water power give energy without pollution. However, people have to build dams to use this energy. And as dams cost a lot of money, so 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.

Task 1
Find out in the text the words which means:
1. energy obtained from the power of the sun, wind, water:
2. to give out:
3. With end:
4. power:
5. use until it is completely finished:
alternative
release
limit
energy
exhausted
Task 2: Read the passage and then decide whether the statements are true (T) or false (F).
Our major source of energy comes from fossil fuels.
The sun gives out large amounts of energy every day.
Solar energy is plentiful, finite, ,unclear,unsafe.
4. The potential of alternative sources of energy is very large.
T
T
T
F
infinite,
clear,
safe
TASK 2: Scan the passage and write down the advantage (s) and disadvantage (s) of each alternative source of energy.
Paragraph 2
One alternative source 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.
Correct 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 sun, water, and the wind are other alternative sources of energy 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.
Correct 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 blow, there is no wind energy.
It’s clean, plentiful, infinite
expensive
Paragraph 4 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.

Paragraph 4 The sun releases large amounts of energy every day.
clean,safe,
plentiful, infinite
Solar energy is not only plentiful and
infinite but also clean and safe
only possible on the day time
Correct Paragraph 4
TASK 2: Scan the passage and write down the advantage (s) and disadvantage (s) of each alternative source of energy.
clean,safe,
plentiful, infinite

1/ How many sources of energy are mentioned in the text?
2/ What are they?
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
2/ What are they?
Task 4: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
Complete the summary then practise speaking it

Goodbye!
Hn
dat
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