IELTS Writing Correction Service
Writing Samples
Band 7

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

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The given diagram illustrates the process that makes it possible to produce energy from the flow of
water
Use synonyms
.
Overall
Linking Words
, in a river is built a dam, which forms a high-level
reservoir
Use synonyms
 on the side and an intake at the bottom where
water
Use synonyms
 flows.
Firstly
Linking Words
, during the day, because of gravity the
water
Use synonyms
 passes through the intake making rotate some turbines inside the power station, before ending in a low-level
reservoir
Use synonyms
 where is collected.
Therefore
Linking Words
, 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
Linking Words
, during the night the opposite happens, from the low-level
reservoir
Use synonyms
, the
water
Use synonyms
 is directed back to the highest one.
This
Linking Words
 is possible thanks to the previously mentioned turbines, in fact, they are reversible,
consequently
Linking Words
 able to pump the
water
Use synonyms
 back to the intake to refill the high-level
reservoir
Use synonyms
.

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Basic structure: Change the third paragraph.
▼
Vocabulary: Replace the words water, reservoir with synonyms.
▼
Vocabulary: Only 3 basic words for charts were used.
▼
Vocabulary: Use several vocabularies to present the data in the second paragraph.
▼
Vocabulary: Use several vocabularies to present the data in the third paragraph.
▼
Topic Vocabulary:
  • hydroelectric power station
  • reservoir
  • potential energy
  • mechanical energy
  • electrical energy
  • turbine
  • generator
  • renewable energy
  • fossil fuels
  • emissions
  • power lines
  • gate-controlled tunnels
  • gravity-driven
  • transformation
  • clean energy source
  • sustainable
  • recycled water
  • mountainous area
  • activate
  • transmit
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