Science 30 January 2000 Diploma Examination
Science 30 January 2000 Diploma Examination
Science 30 January 2000 Diploma Examination
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Use the following information to answer the next question.<br />
Geothermal Power Station<br />
This simplified diagram represents a geothermal power station. Pumps<br />
drive cold water to the hot rocks, where it is heated, and steam is returned to<br />
the surface.<br />
Power<br />
station<br />
Steam<br />
(180°C)<br />
Cold<br />
water<br />
(20°C)<br />
Rocks<br />
shattered<br />
by explosives<br />
(250°C)<br />
Water is forced<br />
through the hot<br />
shattered rocks<br />
35. The steam that returns to the power station at a temperature of 180°C is used to<br />
A. turn a motor to produce electricity<br />
B. turn a generator to produce electricity<br />
C. transform solar energy into electric energy<br />
D. transform chemical energy into electric energy<br />
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