Change the underlined prepositions for the correct ones.

1) We develop power stations under direct transformation of solar energy.

2) Wind energy is actually the movement with the atmosphere driven by the heat to the sun.

3) Photosynthesis is carried from plants that lived hundreds of million years before.

4) The efficiency of a solar power station is reduced on limited time of its work.

5) At present engineers are working with the problem of developing electric power stations above the use of a thermal-chemical cycle.

. 6) In some projects water will be heated during the warmth of mountains on a depth of four- five km.

Complete the sentences.

1. Almost all energy……….

2. The energy stored in natural resources is the result of……….

3. Wind energy is actually………….

4.Solar energy is used to in two ways: ……..

5.It is possible to improve the efficiency of……..

6.A thermal-chemical cycle will operate on……….

7.In Kamchatka there are geothermal power stations……..

8.All these advances in developing new sources of energy and improving the old ones………..

Write the questions using the prompts. Match them to the answers a-h

1) Where / all energy / come / from?

2) What / the result /photosynthesis?

3) What /the first country / to develop /a photoelectric battery?

4) How / solar energy / used?

5) Why /the efficiency of solar power stations/ reduced?

6) What /the solar chemical reactor / use?

7) What / power stations / in Kamchatka?

8) What / the purpose of developing new sources of energy?

a) In two ways: thermal and photovoltaic.

b) Russia

c) Solving the energy problem.

d) Because of limited time of its work.

e) The energy stored in coal, oil, and natural gas.

f) From the Sun.

g) Geothermal power stations operating on hot water-steam mixture.

h) CO2 and water steam of the thermal power station.

Choose the correct alternative. (Infinitive/gerund)

1) We need to improve /improving the efficiency of solar power stations.

2) The scientists suggested to develop/ developing different combinations of solar power stations and traditional ones.

3) They plan to work / working with energy of the solar heat.

4) It is worth pointing out / to point out why large hydroelectric stations are not good for use.

5) The World Energy Council refused to use / using traditional biomass because of environmental problems it can cause.

6) We expect to solve /solving the energy problem in the nearest future.

Read Energy jokes based on pun (игра слов). Find the meanings of underlined words in the dictionary to understand the puns.

1. - Why is wind energy so popular?

-Because it has a lot of fans.

2. -Did you hear about the foolish gardener? He planted a light bulband thought he would get a power plant.

3. –What do cars driven late at night burn for fuel?

- Midnight oil.

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Solar energy	\|	Study these Energy idioms, and then put them in the sentences below

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