1. Unit 11: Sources of energy
Lesson 2: Speaking

2. Vocabulary
Nuclear reactor (n)
Radiation (n)
Hydroelectricity (n)

3. Task 1: Put X in the box A (for the advantages) or D (for disadvantages)
1. Fossil fuels will be exhausted within a relatively short time.
2. Geothermal heat is available only in a few places 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 build a dam for hydroelectricity. X X X X X X X

4. Task 2: Work in pairs: Talk about the advantages and disadvantages of using each alternative source of energy
A: I think/believe that wind power can be an alternative source of energy. B: Why do you think/ believe so? A: Because our major sources of energy are running out while the wind is abundant and unlimited. B: I know it is also clean and safe to the environment. However, it is not available when there is no wind.
Enormous, plentiful, available
Clean and safe
Unlimited, renewable
Convenient
Cheap, simple devices/technology
Dangerous
Expensive
Polluted
Limited, non-renewable
Harmful
Exhausted
I think/believe
In my opinion/ According to me/ From my point of view/ From my viewpoint,…
Personally, I think…
However/ But/ Yet/ Nevertheless/ Although/ Though,…

5. Lucky numbers 1 2 3 4 5 6 7 8 9 10

6. Give 3 examples about fossil fuels

7. Give 2 disadvantages of water power

10. Give 4 advantages of solar energy

11. Give 2 disadvantages of wind power

13. Give 1 disadvatage of geothermal heat

15. Give 1 disadvantage and 4 advantages of nuclear energy