Band 5.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.0 · Cambridge IELTS 12 · 2026-08-03

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 given diagram below shows that how geothermal energy is used to produce electricity.

In overview, Geothermal power plant is used to produce electricity and the different stages are also shown here in the given diagram.

To begin with, the process start from cold water pumping down to 4.5 km and next step is to injection well properly to set the process to geothermal zone and next. step is to the production well and to hot water pump upward and then condenser is converted into steam . So this is the process of producing electricity. So the difference is cold water is pumped downward and the hot water is pumped upward.

Furthermore, the last step is to steam to turbine powered by steam and then to generator powered by turbines and produces electrical signals to supply or produce electricity. So this is the final stage of producing electricity through geothermal power plant.

AI examiner evaluation

Task Achievement / Task Response — Band 5.0

The response identifies the main features of the geothermal process, such as the pumping of water and the generation of electricity. However, the description is somewhat superficial and lacks the precision required for a higher band. For instance, the explanation of the 'condenser' is inaccurate, as the diagram shows steam driving the turbine, not the condenser converting water to steam. The overview is also quite basic. To improve, you should focus on accurately describing the technical stages shown in the diagram and ensuring that the relationship between the components (e.g., the geothermal zone and the production well) is clearly explained.

Coherence and Cohesion — Band 5.0

The essay is organised into paragraphs, which helps the reader follow the sequence of events. However, the use of cohesive devices is repetitive and mechanical. Phrases like 'next step is to' and 'so this is' are used frequently, which makes the flow feel disjointed. There is a lack of variety in linking words, and some sentences are connected in a way that feels unnatural. To improve, try using a wider range of transition signals such as 'subsequently', 'following this', or 'once the water reaches the surface' to create a smoother progression of ideas.

Lexical Resource — Band 5.0

The vocabulary is limited and relies heavily on the words provided in the prompt. There are some inaccuracies in word choice, such as 'electrical signals' instead of 'electricity' or 'power'. The phrasing is often simplistic, and there is little evidence of an attempt to use less common or technical vocabulary appropriate for a process description. To achieve a higher score, you should aim to use more precise terminology related to energy production, such as 'harnessing', 'thermal energy', 'pressurised', or 'conversion process', rather than repeating basic verbs like 'produce' or 'pump'.

Grammatical Range and Accuracy — Band 5.0

The response contains frequent grammatical errors that occasionally impede clarity. There are issues with article usage (e.g., 'the process start' instead of 'starts'), prepositional errors, and awkward sentence structures (e.g., 'the last step is to steam to turbine'). The range of structures is limited, consisting mostly of simple sentences. There is a lack of complex sentence construction, which is necessary for higher band scores. To improve, focus on subject-verb agreement, correct tense usage for describing processes, and combining simple sentences into more complex, accurate structures.

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