Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 12 · 2026-09-02

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 flow chart illustrates the steps involved in generating electricity power from geothermal energy.

Overall, it is clear that the whole process includes five stages, where cold water is being used as an input and the final step concludes with the generation of power supply.

First of all, stored cold water pumped down from the tank to the injection well through 4.5 km deep tunnel with considerable force. This injection well is filled with hot rocks transforms cold water into hot while passing it through geothermal zone. At the next stage, the production well moves the transformed water to next tunnel which, pumped it out in a condenser, which stores steam in a room, produced from the pressure of hot water.

In final phase, turbines take steam and pushes it to the generator which turns steam into electricity. The produced electricity therefore transferred to electric towers which is further connected to used in households.

AI examiner evaluation

Task Achievement / Task Response — Band 6.5

The response covers the main stages of the geothermal energy process, from the injection of cold water to the final distribution of electricity. You have successfully identified the key features and provided a logical summary. However, the description of the process is slightly imprecise in places; for example, the explanation of how the condenser functions is confusing, and the link between the 'hot rocks' and the 'geothermal zone' could be more clearly articulated to reflect the diagram accurately. To reach a higher band, ensure that the technical relationships between the components are described with greater clarity and precision.

Coherence and Cohesion — Band 6.5

The response is logically organized into an introduction, an overview, and two body paragraphs. The progression of ideas follows the sequence of the diagram well. You use some cohesive devices such as 'First of all', 'At the next stage', and 'In final phase' to guide the reader. However, some transitions are slightly mechanical, and the internal cohesion within the second paragraph is hampered by awkward sentence structures, such as the run-on sentence regarding the condenser. Improving the flow between sentences would enhance the overall readability.

Lexical Resource — Band 6.0

You demonstrate an adequate range of vocabulary for the task, using terms like 'geothermal zone', 'injection well', and 'condenser' appropriately. There are some minor issues with word choice and collocation, such as 'generating electricity power' (redundant) and 'pushed it to the generator' (slightly informal). While the vocabulary is sufficient to convey the meaning, it lacks the precision and sophistication required for a higher band. Focusing on more academic collocations and avoiding repetitive phrasing will help improve your score in this area.

Grammatical Range and Accuracy — Band 5.5

The response contains a mix of simple and complex sentence structures. However, there are several grammatical errors that occasionally impede clarity. For instance, 'This injection well is filled with hot rocks transforms cold water' is grammatically incorrect, as is 'which, pumped it out in a condenser'. Additionally, there are issues with article usage and verb tense consistency, such as 'electricity therefore transferred' (missing auxiliary verb). While the meaning remains generally clear, the frequency of these errors prevents the writing from reaching a higher band score.

See this exact question answered at other band scores — the same prompt compared across bands.

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