Listen to the lecture, which has been divided into three sections, and then answer the questions below.

1.

§ This lecture is one in a series. What is the series about?

§ What is the lecture about?

§ Find a suitable sub-heading for each of the three sections.

2. This graph is referred to in Section 1 of the lecture as Graph 1. Draw the curve of the graph according to the description given in the lecture.

3. These questions refer to Section 2 of the lecture.

§ The terms porous and permeability areused to describe the rock where natural geothermal reservoirs are found. Define the two terms.

§ Thermal energy is obtained from underground rocks by ………………

§ Are natural geothermal reservoirs...?

a) found everywhere?

b) fairly common?

c) not so common?

d) rare?

§ What are the four conditions which must be met if a source of geothermal energy is to be made economically viable?

4. This graph is referred to in Section 3 of the lecture as Graph 2. Draw the curve of the graph according to the description given.

5. Discussion.

Could geothermal energy solve some of our energy problems in the future?

Johnson C.N. & D. General Engineering. Prentice Hall, Europe, 1998.

19. Working in pairs, discuss one of the energy source, its advantages and disadvantages, its perspectives:

1. fossil fuels;

2. nuclear power;

3. geothermal energy;

4. hydroelectric power.

Use the expressions:

To result in, to make contribution to, to lead to, to be prone to, to impact, to affect, to achieve notoriety, environmental consequence, to be disposed of, elevated concentration.

20. Organize a students’ conference “The modern problems of energy generation.

Make a report on one of the source of energy (4-5 min).

Consider some alternative sources of energy.

Discuss their perspectives for the future.

WORDLIST

Acid rain	кислотный дождь
Arsenic	мышьяк
Combustion	горение
Dispose	удалять, устранять
Effluent	вытекающий, сточный
Elevate	повышать, возрастать
Fly ash	зольная пыль
Inundate	затоплять, наводнять
Mercury	ртуть
Notoriety	дурная слава
Per capita	на душу населения
Prone	склонный, предрасположенный
Residue	остаток
Retain	удерживаться, сохраняться
Release	сброс, утечка
Trace elements	микроэлементы
Thyroid cancer	рак щитовидной железы
Waterlog	затоплять, заболачивать

UNIT 4

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