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The diagram below shows how electricity is generated in a hydroelectric power station.

The diagram outlines the process of electricity production in a hydroelectric power station. The process begins when the water flows from the river into a high-level reservoir and ends with the transmission of electricity to the national grid. In general, the process is broadly distributed into day and night stages with the daylight stages involving electricity production from a river and storage of water in a reservoir. At night, the water flows back in the opposite direction towards an initial reservoir and the river. The day stage of the process involves channelling the river water into a high-level reservoir backed up by a dam. There is an intake area leading to the power station that opens during the day and closes at night. Water flows during the day to generate electricity through the power station turbines. The generated electricity is then sent to a national grid through power lines while the excess water runs to a low-level reservoir. During the night stage, the water stored in the low-level reservoir is reverted to the power station and the turbines of the generator pump it back into the high-level reservoir which is closed during the night. The river water is stored at the upper level and later it flows down, starting the cycle again.

IELTS academic 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. v.1

The diagram outlines the process of electricity production in a hydroelectric power station. The process
begins
when the water flows from the river into a high-level reservoir and ends with the transmission of electricity to the national grid.
In general
, the process is
broadly
distributed into day and night stages with the daylight stages involving electricity production from a river and storage of water in a reservoir. At night, the water flows back in the opposite direction towards an initial reservoir and the river. The day stage of the process involves channelling the river water into a high-level reservoir backed up by a dam. There is an intake area leading to the power station that opens during the day and closes at night. Water flows during the day to generate electricity through the power station turbines. The generated electricity is then
sent
to a national grid through power lines while the excess water runs to a low-level reservoir. During the night stage, the water stored in the low-level reservoir
is reverted
to the power station and the turbines of the generator pump it back into the high-level reservoir which
is closed
during the night. The river water
is stored
at the upper level and later it flows down, starting the cycle again.
1Linking words, meeting the goal of 7 or more
59Repeated words, meeting the goal of 3 or fewer
0Mistakes
4 paragraphs
212 words
6.0
Overall Band Score
Coherence and Cohesion: 5.5
  • Structure your answers in logical paragraphs
  • ?
    One main idea per paragraph
  • Include an introduction and conclusion
  • Support main points with an explanation and then an example
  • Use cohesive linking words accurately and appropriately
  • Vary your linking phrases using synonyms
Lexical Resources: 6.0
  • Try to vary your vocabulary using accurate synonyms
  • Use less common question specific words that accurately convey meaning
  • Check your work for spelling and word formation mistakes
Grammatical Range: 6.5
  • Use a variety of complex and simple sentences
  • Check your writing for errors
Task Achievement: 6.5
  • Answer all parts of the question
  • ?
    Present relevant ideas
  • Fully explain these ideas
  • Support ideas with relevant, specific examples
Labels Descriptions
  • ?
    Currently is not available
  • Band score ≥ 7
  • Band score ≤ 6
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