Band 5.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.0 · Cambridge IELTS 12 · 2026-11-11

IELTS Writing Task 1 question

The diagram below shows how geothermal energy is used to produce electricity.

Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

Student answer (Band 5.0)

The given process diagram illustrate the mass manufacturing of Geothermal power plant . This process is a joint venture of humans and machines which work together for a single final product . Overall it can be seen the mass production of geothermal power plant is carried out by following more than five distinctive parts . Additionally the process starts from cold water and ends at Generator or turbine . Futhermore all steps are very important and are connected with each others . Talking about intial steps first step is cold water which is followed by the injection then comes the production well , condenser and then generator and turbine . All these process complete almost half of the total procedure . Pouring some cold water pumped and hot water pumped up these final steps are very critical to get the finished product . Hence a finished product is obtained by following different phases of the mass manufacturing of geothermal power plant

AI examiner evaluation

Task Achievement / Task Response: Band 4.5

The response identifies the general subject and mentions several labels, including cold water, the injection well, production well and condenser. However, it only minimally describes how the system works and does not accurately report the main sequence: water is heated underground, brought to the surface, converted to steam, and used to drive a turbine that powers a generator. The overview is unclear and includes the inaccurate claim that the process ends at the “Generator or turbine”; the generator is the final electricity-producing component, after the turbine. “Mass manufacturing” and “finished product” also misrepresent an energy-generation process. To improve, give a concise overview of the transformation and explain each stage in order, including the 4.5 km depth where relevant.

Coherence and Cohesion: Band 4.5

There is an attempt to organise the response with an opening, an overview and a later description of stages. The sequence “injection… production well, condenser” gives the reader some sense of order. However, the progression is difficult to follow because the stages are not explained and the order becomes inaccurate: the response places the generator before the turbine, while the diagram shows steam driving the turbine and the turbine powering the generator. Linking phrases such as “Additionally,” “Furthermore” and “Hence” are repetitive or do not clarify relationships. The paragraphing also does not distinguish the overview from the process details. Use a clear overview followed by a step-by-step account, with simple sequencing words that accurately connect each stage.

Lexical Resource: Band 5.0

The response uses some relevant process vocabulary, including “injection well,” “production well,” “condenser” and “cold water,” so the topic is recognisable. However, the range is limited and several repeated or inaccurate expressions make the description imprecise. “Mass manufacturing,” “single final product” and “finished product” are not suitable for describing electricity generation, while “Pouring some cold water pumped and hot water pumped up” is unclear. There are also spelling errors such as “Futhermore” and “intial,” and “each others” is an inaccurate phrase. Aim for precise process terms such as “is pumped,” “is heated,” “is converted into steam” and “generates electricity,” and check spelling and collocations before submitting.

Grammatical Range and Accuracy: Band 5.0

The response attempts a few longer sentence forms, including “Overall it can be seen…” and “Hence a finished product is obtained…,” but control is inconsistent and the range remains limited. Subject–verb agreement is incorrect in “The given process diagram illustrate,” and several sentences have faulty or incomplete structures, particularly “Pouring some cold water pumped and hot water pumped up these final steps are very critical.” Articles, plurals and punctuation are also inconsistent, as in “a single final product .” and “each others.” These errors sometimes make the intended relationships difficult to understand. Practise building accurate passive sentences for process descriptions—for example, “Cold water is pumped down the injection well”—and use full stops and commas consistently.

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