Band 5.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.5 · Cambridge IELTS 12 · 2026-09-26

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 5.5)

The provided linear chart illustrates how geothermal energy is produced by using cold water.

Looking from an overall perspective, it is readily apparent that the linear graph consists of five different stages, the beginning with the storage of cold water and ends up with generator.

Intially, the cold water is stored into some blocks before injecting to the well. The cold water is placed from the well is about 4.5 km. The next step, the injection well moved to the production well by using geothermal zone, it called as hot rocks. After this stage, the production well followed un upwards trend and stayed into condenser with the help of hot water pumpes.

Subsequently, during the condenser stage, where the heat is produced and this can be beneficial for opreating the turbine. Afterwards, The turbine powered on by steam, which comes from condenser. Finally, the generator are continue to flow or powered by turbine and a generate the electricity.

AI examiner evaluation

Task Achievement / Task Response: Band 5.0

The student attempts to summarise the main features of the geothermal energy process diagram, mentioning the five main stages and key data such as the 4.5 km depth of the injection well. However, the response contains several inaccuracies and confusing descriptions regarding the mechanics of the process. For instance, stating that 'the cold water is placed from the well is about 4.5 km' and that 'the injection well moved to the production well by using geothermal zone' misinterprets the spatial layout of the diagram. While an overview is attempted, the under-development and misrepresentation of specific mechanical steps prevent the response from achieving a higher band score.

Coherence and Cohesion: Band 6.0

The text is organised into four paragraphs, following a logical chronological progression from the initial storage of cold water to the final generation of electricity. Cohesive devices and sequence markers such as 'Intially', 'The next step', 'After this stage', and 'Subsequently' are used to guide the reader through the stages. However, paragraphing is somewhat basic, and referencing is occasionally unclear or awkward, such as 'which comes from condenser'. Overall, the information flows with reasonable coherence despite the linguistic errors.

Lexical Resource: Band 5.0

The student demonstrates an adequate vocabulary range for the task, successfully using process-related terms such as 'storage', 'injection well', 'production well', 'condenser', 'turbine', and 'generator'. However, there are notable word choice and collocation errors throughout the text, including 'linear chart' instead of 'process diagram', 'opreating' (spelling error), and awkward phrases like 'the generator are continue to flow'. These lexical inaccuracies and non-standard expressions restrict the score to the lower intermediate level.

Grammatical Range and Accuracy: Band 5.0

The response features a mix of simple and complex sentence structures, attempting passive forms such as 'cold water is stored' and 'hot water pumped up'. Nevertheless, the text is marred by frequent grammatical errors, incorrect prepositions, and structural awkwardness. Examples include 'the beginning with the storage', 'the cold water is placed from the well', and 'a generate the electricity'. Subject-verb agreement errors, such as 'the generator are continue', further hinder grammatical control. These errors occasionally cause difficulty for the reader.

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