Band 6.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 6.0 · Cambridge IELTS 12 · 2026-09-20
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 diagram demonstrates the procedure of electricity production by the use of geothermal energy. Following diagram shows the step by step structure of how electricity is generated.
Starting the process by using the kinetic energy of falling cold water covering the distance of 4.5 kilometers downwards, then the water is pushed to the geothermal zone passing from the injection well. The geothermal zone contains hot rocks which increase the water temprature and going through the production well the hot water is pumped up into condenser which changes its state to steam. Now steam plays a significant role in electricity generation.
Furthermore, the steam then passes through the turbine which compells the turbine to rotate and the turbine fan movement causes the generation of electricity. The generated electricity is then sent to transformers and then the line continues to provide electricity to cities and connected areas.
Summing up the process that is simply utilized by natural resoures and processes which results in the production of electricity, this method and process is often used in dams and natural powered turbines using geothermal energy.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 6.0 |
| Coherence and Cohesion | 6.0 |
| Lexical Resource | 6.0 |
| Grammatical Range and Accuracy | 6.0 |
| Overall | 6.0 |
Task Achievement / Task Response — Band 6.0
The student covers the main steps of the geothermal energy process, moving from the injection well down to the geothermal zone, up through the production well, and into the condenser, turbine, and generator. However, there are some inaccuracies in the description compared to the visual data; for instance, stating that cold water falls using kinetic energy ignores the fact that it is actively pumped down 4.5 kilometers, and mentioning transformers and dams introduces extraneous real-world elements not shown in the diagram. Despite these minor misinterpretations and additions, all key stages of the process are reported, satisfying the core requirements of Task 1.
Coherence and Cohesion — Band 6.0
The response is arranged logically and follows the chronological sequence of the diagram from left to right. Cohesive devices such as 'Starting the process', 'then', 'Furthermore', and 'Summing up' are used to guide the reader through the stages. However, paragraphing is somewhat weak, with the middle body of the text forming one long, dense paragraph that could benefit from being split into two distinct steps (subterranean phase versus surface generation phase). Referencing is generally clear, though occasional mechanical transitions detract from a completely smooth flow.
Lexical Resource — Band 6.0
The student attempts a range of vocabulary suitable for a process diagram, using terms such as 'procedure', 'kinetic energy', 'geothermal zone', 'condenser', and 'generation'. There are some word choice and collocation errors, such as 'compells the turbine to rotate' (compels) and 'natural resoures' (resources) with a spelling mistake ('temprature'). Less common vocabulary is attempted with mixed success, achieving an adequate range that allows the message to be communicated clearly despite minor flaws.
Grammatical Range and Accuracy — Band 6.0
The response contains a mix of simple and complex sentence forms, utilizing participial phrases like 'Starting the process by using...' and relative clauses. However, there are several grammatical inaccuracies and run-on structures, such as 'increasing the water temprature and going through the production well the hot water is pumped up into condenser', which lack necessary prepositions and punctuation. While these errors do not impede overall communication, they occur frequently enough to prevent the writing from reaching a Band 7.
See this exact question answered at other band scores — the same prompt compared across bands.
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