Unit 11. Sources of energy

WindWindmill
power



Water
Hydroelectric
Power dam






VOCABULARY

1.fossil fuel (n): nhiên liệu hóa
đồ dự trữ để dùng k
2. reserve (n):
thạch
3. to exhaust:
làm cạn kiệt
4. alternative (adj): thay thế
5. to release:
phóng thích,
6. limited (adj)
# unlimited
: (adj)
thả
có giới hạn

# vô
hạn


Checking vocabulary
1. fossil fuel (n): nhiên liệu hóa
2. reserve (n):
thạch
đồ dự trữ để dùng
làm
cạn kiệt
3. to exhaust:
khi cần
4. alternative (adj): thay
phóng thích,
5. to release:
thế
thả : (adj)
6. limited (adj) # unlimited
có giới
hạn

# vô hạn


TASK 1: Fill each blank with a suitable word.
energy

released exhausted

alternative limited

1. Six hundred balloons were
release
at the ceremony.
d
2. They are looking alternativ
for __________
e it.
methods of making
energ
3. People use
_______ to run machines,
y their homes.
heat and cool
4. The food in the restaurant is cheap,
but the choice
is rather_______
limited
exhaust
5. Fuel supplies are nearly__________


TASK 2: Scan the passage and write down the advantage (s)
and disadvantage (s) of each alternative source of energy.

Sources of
energy
Nuclear power
Solar energy

Advantage(s)

It’s unlimited.
It’s not only plentiful and
infinite but also clean and safe.

Water power

It’s clean and unlimited.

Wind power

It’s clean and unlimited.

Geothermal heat

It’s available.

Disadvantage(s)
It can be very
dangerous.
It’s only possible
during the day time.
It’s expensive.
There’s no wind energy
when there is no wind.

It’s available only in
a few places.

TASK 3: Answer the questions
1. What is our major source of energy ?
2. Is our major source of energy limited ?
Why / why not ?
3. How many sources of energy are
mentioned in the text ? What are they ?
4. Which source of energy do you think
has the most potential?



Complete the summary of the reading passage by filling
each blank with a suitable word from the box.

one
environment
energy unlimited

limited alternative
sources
fuels

We need energy to live and work. Our major source of
energy is oil. Oil is (2)…....
(1)..………
one kind of fossil fuel. The
limited
amount of fossil (3) fuels

.….. 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
alternative sources of energy.
nuclear power are (5)…..…………..
They can give us electricity. Other alternative (6)
sources
……………are
the sun, waves and water. These
unlimited and available but
sources are not only (7)…………….
environment People
also clean and safe for the (8)…………………
should develop and use them more and more in the
future.


• Write the answers into notebooks.
• Prepare Unit 11 B : SPEAKING.



What is our major source of energy ?

Our major source of energy
comes from fossil fuels.


:2
You’ve just lost

half of your
points!

You are unlucky!


Is our major source of energy limited ? Why / why not ?

Yes, it is. Because power demand
is increasing very rapidly , fossil
fuels will be exhausted within a
relatively short time .


How many sources of energy are mentioned in the text ?
What are they ?

Five sources of energy are
mentioned in the text. They are :
nuclear power , solar energy ,
water power , wind power ,
geothermal heat.


Which source of energy do you think has the most potential?

I think solar energy is the most
potential.

X

2

Lucky
number!