Band 7.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 7.0 · Cambridge IELTS 12 · 2026-08-01

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 7.0)

The illustration displays the procedure of electricity generation from geothermal energy at the power plant setup.

Overall, the electricity production involves a five step process, where cold water is being converted into vapour with the help of hot rocks form of a geothermal energy in order to power a turbine to generate electricity.

The first step starts with cold water getting pumped down at 4.5 km deep to the injection well which leads to the geothermal zone. There are many hot rocks in this zone converting cold water into hot. The water will be pumped up to surface level through the production well into a condenser.

At the fourth step hot water turns to steam inside the condenser, which will be pushed into a turbine. The vapour powers up the turbine to spin the steam forcefully to start the generator, which produces electricity. The electricity will be transferred to a power station from where it will be distributed to the consumers.

AI examiner evaluation

Task Achievement / Task Response — Band 7.5

The response successfully identifies the main stages of the geothermal energy process. You have provided a clear overview and described the sequence from the injection well to the power distribution. However, the description of the process is slightly mechanical and could benefit from more precise technical terminology. For instance, the transition from 'hot water' to 'steam' in the condenser is a key technical detail that could be explained with more clarity regarding the physical state change. Overall, you have covered all parts of the task well, providing a logical summary of the provided diagram.

Coherence and Cohesion — Band 7.0

The response is logically organized, moving step-by-step through the process. The use of sequencing words like 'The first step' and 'At the fourth step' helps the reader follow the progression. Paragraphing is used to separate the introduction/overview from the body of the process. To reach a higher band, you could improve the flow by using a wider variety of cohesive devices (e.g., 'subsequently', 'following this', 'thereby') rather than relying on simple numbering or basic transition phrases. The referencing is generally clear, though some sentences feel slightly disconnected.

Lexical Resource — Band 7.0

You have used a sufficient range of vocabulary to describe the process, including terms like 'geothermal zone', 'injection well', and 'condenser'. There are some minor inaccuracies in word choice, such as 'hot rocks form of a geothermal energy', which is slightly awkward. Additionally, 'powers up' is a bit informal for an academic report. To improve, focus on using more precise collocations related to energy production and engineering processes. The vocabulary is adequate for the task, but lacks the sophistication required for higher bands.

Grammatical Range and Accuracy — Band 7.0

The response demonstrates a mix of simple and complex sentence structures. While the meaning is always clear, there are some grammatical slips, such as 'hot rocks form of a geothermal energy' (missing preposition/article) and 'cold water is being converted' (the passive voice is appropriate, but the tense choice is slightly inconsistent with the rest of the report). Punctuation is generally accurate, and the errors present do not impede communication. To improve, try to incorporate more varied complex structures, such as relative clauses or participle phrases, to describe the mechanical functions.

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