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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
49Repeated words, meeting the goal of 3 or fewer
0Mistakes
Academic
4 paragraphs
212 words
6.5
Overall Band Score
Coherence and Cohesion: 6.5
  • 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: 7.0
  • 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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