Band 6.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.5 · 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 6.5)

Geothermal Power plant is an another example of science that shows how we can use natural resources to work in favor of mankind. In this given diagram point number 1 shows that cold water pumped down 4.5km under soil to naturally hot area of earth. Point number 2 shows the injection well that is unground and in contact with hot rocks, which is considered a Geothermal Zone. This geothermal zone has enough temperature to increase water temperature that is essential feature of this process. When cold water moves from point 2 to point 3, temperature of water increased and that hot water pumped to point 4 where condenser has enough steam power to move a turbine which is steam powered. That turbine is linked with a generator as shows in diagram, which is main component to generate electricity. So from this diagram we can understand , how a geothermal power plant generate electricity uses natural power of steam produced naturally via hot rocks without polluting atmosphere unlike thermal power plants (Coal Powered).

AI examiner evaluation

Task Achievement / Task Response — Band 6.5

The response covers the main stages of the geothermal process, identifying the key components such as the injection well, the geothermal zone, and the turbine. However, the report lacks a clear overview or summary of the process, which is a requirement for Task 1. The description is somewhat repetitive and relies on a point-by-point listing rather than a cohesive summary of the mechanism. To improve, you should group related stages together and provide a clear introductory statement that outlines the overall process, rather than focusing on individual 'points' as numbered in the diagram.

Coherence and Cohesion — Band 6.5

The response is coherent, but the paragraphing is absent, as the entire report is written as a single block. This makes the text feel dense and less professional. While there is a logical progression from the injection of water to the generation of electricity, the use of cohesive devices is somewhat mechanical (e.g., 'Point number 1', 'Point number 2'). To reach a higher band, you should use a wider variety of linking words and phrases to connect ideas more fluidly and divide the text into logical paragraphs, such as one for the initial extraction and one for the power generation phase.

Lexical Resource — Band 6.5

The vocabulary is generally adequate for the task, with terms like 'geothermal zone', 'condenser', and 'generator' used correctly. However, there are some awkward phrasings and word choices, such as 'science that shows how we can use natural resources to work in favor of mankind', which is overly wordy and slightly unnatural for a technical report. There are also minor errors in article usage and collocation, such as 'is an another example'. Expanding your range of academic vocabulary and focusing on more precise, concise descriptions would improve your score.

Grammatical Range and Accuracy — Band 6.5

The response contains a mix of simple and complex sentences, but there are frequent grammatical errors that affect the flow. For example, 'temperature of water increased' lacks an article, and 'as shows in diagram' should be 'as shown in the diagram'. There are also issues with sentence structure, such as the run-on sentence at the end. While the meaning is generally clear, the frequency of these minor errors prevents the response from reaching a higher band. Focusing on subject-verb agreement and the correct use of articles will help improve your accuracy.

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