Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 12 · 2026-11-12

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 6.0)

The diagram illustrates the process of producing electricity in five different stages such as cold water, the injection well, the production well, condenser and generator turbine by using geothermal energy in a power plant.

Overall, it is a cyclical process starting with cold water is use in the first stage and then transfer it to the injection wellnext, till the water turns into a steaming process and finally transfer to the fifth stages to produce electricity to generate.

Initially, cold water is pumping down in the injection well reservoir, which is 4.5 km in depth. The water is then tranfered to the geothermal zone and water is heated by using hot rocks. Subsequently, the water is converted into hot water and transferred it to the production well. The hot water is pumping up to the condensation zone and converted the water into a steaming process. In the final stages, the steam is converted by using a strong turbine and generator machine and produce electricity for everyone.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You identify the process as geothermal electricity production and include several key stages: water is pumped down a 4.5 km injection well, heated by hot rocks, brought up through the production well, and used to produce electricity. The overview also recognises the sequence from cold water to electricity. However, some details are unclear or inaccurate: the diagram shows steam powering a turbine, which drives a generator, whereas you describe the turbine and generator together as converting the steam. The opening also calls the process “cyclical,” although the diagram presents a sequence rather than a cycle. To strengthen the response, describe the condenser’s role more precisely and distinguish the turbine from the generator. The main stages are covered, but some are less fully explained than others.

Coherence and Cohesion: Band 6.5

The response has a recognisable structure, with an introduction, an overview, and a paragraph describing the stages in sequence. Sequencing expressions such as “Initially,” “Subsequently,” and “In the final stages” help the reader follow the process. This gives the account a coherent overall arrangement. However, some links are awkward or unclear, particularly “starting with cold water is use” and “then transfer it to the injection wellnext,” where the relationship between stages is difficult to follow. The overview also repeats the sequence without clearly summarising the key transformation. Use shorter, clearly connected steps and check that each reference, such as “it” or “the water,” has an unmistakable antecedent. More precise linking would make the progression smoother and less mechanical.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “injection well,” “production well,” “geothermal zone,” “hot rocks,” and “electricity,” so the topic is generally clear. There are also attempts to use more specific terms such as “condenser.” However, several word choices and collocations are inaccurate or unnatural: “a steaming process,” “condensation zone,” and “a strong turbine and generator machine” do not describe the diagram precisely. “Reservoir” is also not the label for the injection well. Spelling errors such as “tranfered” further reduce accuracy. Aim for precise technical nouns and natural process verbs, for example, say that water is heated, steam powers the turbine, and the generator produces electricity. This would improve clarity and range.

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and more complex sentences, including a sequence of clauses beginning “The water is then…” and “Subsequently…”. However, control of sentence structure and verb forms is inconsistent, and errors sometimes make the process difficult to understand. Examples include “starting with cold water is use,” “cold water is pumping down,” and “the hot water is pumping up,” where the passive forms are not correctly constructed. In “the water is converted into hot water and transferred it,” the verb pattern shifts incorrectly, while “and produce electricity” does not agree with the preceding subject. Practise consistent passive forms for process descriptions, such as “is pumped,” “is heated,” and “is transferred.” Breaking the longest sentences into complete, accurately formed clauses would also help.

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