The following statements list some advantages and disadvantages of various sources of energy.. Water power provides energy without pollution.. Solar energy is not only plentiful and unli
Trang 3Water Power Hydroelectric dam
Trang 4Wind power
Trang 8Task 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.
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.
Trang 9Task 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?
Trang 10Some suggestions to express advantages and disadvantages.
Asking for your
opinions
What do you think about?
What is your opinion?
What do you mean that?
Why do you think so?
How do you feel about?
Expressing
opinions
I think/ believe/ feel …
In my opinion … According to …
It meant that … Express agreements
I agree/ think so…
That’s right/ true … It’s a good idea … Express
disagreements
I don’t think/ I don’t agree/ I disagree … Well, It’s not true/ right but …
Trang 11Sources of
energy
Advantages Disadvantages
Nuclear energy
Geothermal heat
Solar energy
Wind power
Water power
It is available
It can be dangerous
It is unlimited
It is not only plentiful and infinite but also clean and safe
It is clean and unlimited
It is clean and unlimited
It is only available in
some places
It is only possible during the day time
If the wind doenn’t blow,there is no
wind no energy.
It is expensive to built a dam
for hydroelectricity
Trang 12A: I think that can be an alternative sources
of energy.
B: Why do you think so?
A: Because our major sources of energy are running out while
Example:
wind power (1)
the wind is abundant and unlimited.
(2)
it is also clean and safe to the environment.
(3)
it is not available when there is no wind.
(4) However,
B: I know
Trang 13A: 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)
However, _(4) _
B: I know _(3)
(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.
Trang 14A: I think that solar energy can A: Because our major
sources of energy are running out while the solar energy
is plentiful and infinite.
However, it is only possible during the day time.
B: I know it is also clean and safe to the environment
Trang 15A: I think that _(1) _ can be an alternative source of energy.
while (2)
(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.
Trang 16A: I think that _(1) _ can be an alternative source of energy.
while (2)
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
Trang 17A: 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)
However, _(3) _
B:
(1): geothermal heat
(2): this heat is available.
(3): It is possible only in a few places in the world.