Period:65
Hydroelectric dam
Water Power
Windmill
Wind power
reactor /ri:'æktə/ ( n) :
lò phản ứng
limited /'limitid/ ( adj ) :
hạn chế, có giới hạn
unlimited /ʌn'limitid/ (adj):
không giới hạn
renewable /ri'nju:əbl/ (adj ) :
có thể thay thế
non-renewable /,nɔn 'ri'nju:əbl/ (adj ): không thể thay thế
Task 1. The following statements list some advantages and disadvantages of
various sources of energy. Read and tick () the appropriate box A ( for the
advantages ) or D (for the disadvantages ), then compare the results with
partner’s.
A
1.Fossil fuels will be exhausted within a relatively short
time .
2.Geothermal heat is available only in the few place in
the world.
3.If the wind does not blow, there is no wind energy.
4.Water power provides energy without pollution.

5.A nuclear reactor releases radiation which is
dangerous to the environment.
6. Solar energy is not only plentiful and unlimited but
also clean and safe.
7.It is expensive to built a dam for hydroelectricity.

D





Task 2: Work in pairs. Talk with your friend about the advantages
and disadvantages of using each alternative sources of energy ,
using the suggestions from Task 1.
I think that wind
power can be an
alternative source
of energy.......
Why do you
think so?
Sources of
energy
Nuclear
energy
Geothermal
heat
Solar energy
Wind power
Water power
Advantages
Disadvantages
It is unlimited
It can be dangerous
It is available
It is only available in
some places
It is not only plentiful
and infinite but also
clean and safe
It is only possible
during the day time
It is clean
and unlimited
If the wind doenn’t
blow,there is no
wind no energy.
It is clean and
unlimited
It is expensive to
built a dam
for hydroelectricity
Example :
A: I think that wind power can be an alternative sources
(1)
of energy.
B: Why do you think so?
A: Because our major sources of energy are running out
while the wind is abundant and unlimited.
(2)
B: I know it is also clean and safe to the environment.
(3)
However, it is not available when there is no wind.
(4)
A: I think that _______(1)___________ can be an alternative
source of energy.
B: Why do you think so?
A: Because our major sources of energy are running out
while __________(2)____________ .
B: I know ___________(3)____________.
However, _________(4)_____________ .
(1): solar energy
(2): solar energy is plentiful and infinite.
(3): It is also clean and safe to the enviroment.
(4): It is only possible during the day time.
A: I think that solar energy can be an alternative sources
of energy.
B: Why do you think so?
A: Because our major sources of energy are running out
while the solar energy is plentiful and infinite.
B: I know it is also clean and safe to the environment.
However, it is only possible during the day time.
A: I think that _______(1)___________ can be an alternative
source of energy.
B: Why do you think so?
A: Because our major sources of energy are running out
while __________(2)____________ .
B: However, _________(3)_____________ .
(1): nuclear power
(2): nuclear power is unlimited
(3): It can be very dangerous. A nuclear reactor releases
radiation which is harmful to the environment.
A: I think that _______(1)___________ can be an alternative
source of energy.
B: Why do you think so?
A: Because our major sources of energy are running out
while __________(2)____________ .
B: I know ___________(3)__________________ .
However, _________(4)_____________ .
(1): water power
(2): water is unlimited
(3): It also provides energy without pollution.
(4): It is expensive to build a dam for hydroelectricity
A: I think that _______(1)___________ can be an alternative
source of energy.
B: Why do you think so?
A: Because our major sources of energy are running out
while __________(2)____________ .
B: However, _________(3)_____________ .
(1): geothermal heat
(2): this heat is available.
(3): It is possible only in a few places in the world.