Band 5.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 5.0 · 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 5.0)
The provide liner chart illustrates how geothermal energy is produced by using cold water.
Looking from an overall perspective, it is readily apparent that the liner graph consist 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 generate the electricity.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.0 |
| Coherence and Cohesion | 5.5 |
| Lexical Resource | 5.0 |
| Grammatical Range and Accuracy | 5.0 |
| Overall | 5.0 |
Task Achievement / Task Response: Band 5.0
The student attempts to summarise the diagram showing how geothermal energy produces electricity, meeting the word count requirement with 157 words. However, there are significant comprehension errors regarding the visual data. The student misidentifies the diagram type, calling it a 'liner chart' or 'liner graph' instead of a process diagram. Furthermore, the description of the mechanical process contains confusion; for instance, stating that 'the injection well moved to the production well' and misinterpreting the condenser and turbine stages. While the main stages are outlined in sequence, the confusion over the technical components prevents a fully accurate reporting of the features, aligning the response with a Band 5.0.
Coherence and Cohesion: Band 5.5
The response is organised into four paragraphs, providing a logical progression from an introduction to the final stage of electricity generation. Cohesive devices are used to sequence the steps, such as 'Looking from an overall perspective', 'Intially', 'The next step', and 'Subsequently'. However, referencing and cohesion are sometimes faulty or mechanical, as seen in awkward transitions like 'the beginning with the storage of cold water and ends up with generator'. Paragraphing is present and helps structure the text, but the mechanical and occasionally confusing referencing place this performance at Band 5.5.
Lexical Resource: Band 5.0
The vocabulary used is relatively basic and repetitive for an academic task. The student misuses certain terms, such as 'liner chart' and 'liner graph' instead of 'process diagram'. Other lexical choices are imprecise or non-standard, including 'hot water pumpes', 'opreating', and 'intially'. While there are attempts to use topic-specific vocabulary like 'geothermal energy', 'generator', 'turbine', and 'condenser', frequent word-choice errors and spelling mistakes restrict the lexical range and accuracy to a Band 5.0 level.
Grammatical Range and Accuracy: Band 5.0
The response displays a limited range of sentence structures, with frequent grammatical errors that occasionally impede understanding. Examples of errors include subject-verb agreement issues ('the generator are continue to flow'), missing articles ('ends up with generator', 'comes from condenser'), and faulty prepositional usage ('stored into some blocks before injecting to the well'). Complex sentence attempts are often awkward or grammatically incomplete, such as 'the beginning with the storage of cold water and ends up with generator.' These persistent errors across simple and attempted complex structures warrant a band score of 5.0.
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