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 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 diagram illustrates the function process of one particular hydroelectric power station. The whole procedure of generating energy can be divided into two stages. During the daytime the river flows into a high-level pool, going through the intake of a dam and
then
Linking Words
downhill in order to generate electricity. After reaching the power station, river
water
Use synonyms
is used to activate the reversible turbines which operate the generator to generate power, transported to the National grid via powerlines. Finishing the whole process,
water
Use synonyms
will flow to a low-level storage, where it will be preserved. At night the system works completely reversely.
Water
Use synonyms
from the pool at the high altitude will be pumped into the storage at the low altitude using reversible turbines. After that, the intake of the dam will be closed so that
water
Use synonyms
can be stored at a higher altitude, which is used to complete to procedure during the day.
Hence
Linking Words
the cycle is formed.
According to
Linking Words
the chart, it is obvious how the electricity is generated using the system.
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Basic structure: Change the third paragraph.
Vocabulary: Replace the words water with synonyms.
Vocabulary: Only 4 basic words for charts were used.
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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