The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comparisons where relevant
The given diagram illustrates the process that makes it possible to produce energy from the flow of
water
.
Overall
, in a river is built a dam, which forms a high-level reservoir
on the side and an intake at the bottom where water
flows. Firstly
, during the day, because of gravity the water
passes through the intake making rotate some turbines inside the power station, before ending in a low-level reservoir
where is collected. Therefore
, the movement of the turbines, because they are attached to a generator, thanks to hydroelectric power electricity is generated. Afterwards, it is transported to the national grid thanks to power lines.
Lastly
, during the night the opposite happens, from the low-level reservoir
, the water
is directed back to the highest one. This
is possible thanks to the previously mentioned turbines, in fact, they are reversible, consequently
able to pump the water
back to the intake to refill the high-level reservoir
.Submitted by alessandro.talese on
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Basic structure: Change the third paragraph.
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Vocabulary: Replace the words water, reservoir with synonyms.
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Vocabulary: Only 3 basic words for charts were used.
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Vocabulary: Use several vocabularies to present the data in the second paragraph.
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Vocabulary: Use several vocabularies to present the data in the third paragraph.
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