unit 11: sources of en erg y

Water PowerHydroelectric dam Windmill Wind power reactor /ri:'æktə/ ( n) : lo ̀ pha ̉ n ư ́ ng limited /'limitid/ ( adj ) : ha ̣ n chê ́ , co ́ giơ ́ i ha ̣ n unlimited /ʌn'limitid/ (adj): không giơ ́ i ha ̣ n renewable /ri'nju:əbl/ (adj ) : có thể thay thế non-renewable /,nɔn 'ri'nju:əbl/ (adj ): không thê ̉ 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 A D D 1.Fossil fuels will be exhausted within a relatively short 1.Fossil fuels will be exhausted within a relatively short time . time . 2.Geothermal heat is available only in the few place in 2.Geothermal heat is available only in the few place in the world. the world. 3.If the wind does not blow, there is no wind energy. 3.If the wind does not blow, there is no wind energy. 4 4 . . Water power provides energy without pollution. Water power provides energy without pollution. 5.A nuclear reactor releases radiation which is 5.A nuclear reactor releases radiation which is dangerous to the environment. dangerous to the environment. 6. Solar energy is not only plentiful and unlimited but 6. Solar energy is not only plentiful and unlimited but also clean and safe. also clean and safe. 7.It is expensive to built a dam for hydroelectricity. 7.It is expensive to built a dam for hydroelectricity.                   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. Why do you think so? I think that wind power can be an alternative source of energy . . 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. be an alternative source of energy . Sources of energy Advantages Disadvantages Nuclear energy Geothermal heat Solar energy Wind power Water power