Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 12 · 2026-11-13

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 illustrates the process of elecricity production of a geothermal power plant.

Overall, the process shows that the cold water become the steam goes through the geothermal zone and the electricity is produced further from the generator through the turbine, which gets energy from steam.

At first, the cold water goes down nearly 4.5 kilometers by a pump to the geothermal zone, which is hot rocks layer underneth the soil.Then, the cold water goes down and enters the geothermal zone via the injection wall and gets up by pump via the production wall.

After that, hot pumped water goes inside a condensor and become steam, which enters into the turbine with high velocity and gives rotational motion to the turbine. The rotary motion of turbine helps to rotate the rotor of the generator, which produce electricity. The produced clecrtricity goes to the tower and can be suplied from the grid.

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You cover the main stages, from water being pumped underground through hot rocks to steam driving a turbine and generator, and you include the 4.5-kilometre depth. The sequence is generally recognisable, and the overview identifies the conversion of water into electricity. However, some details are unclear or not supported by the diagram: the water is heated as it passes through the geothermal zone, rather than simply going down again, and the diagram does not specify that the steam enters the turbine at high velocity or describe a rotor. The final claim that electricity is supplied “from the grid” also goes beyond the visual, which shows transmission lines. Make the overview more precise and focus on the diagram’s key transformations and equipment.

Coherence and Cohesion: Band 6.0

The response follows the process in a broadly logical order, using “At first” and “After that” to guide the reader from the wells to the turbine and generator. The overall arrangement is coherent, and the stages are mostly easy to follow. However, the first body section repeats that the water “goes down” and does not clearly distinguish its downward movement in the injection well from its upward movement in the production well. The overview sentence is also difficult to interpret because several stages are compressed into one clause. Use clearer paragraphing to separate the overview from the detailed sequence, and use references such as “this heated water” to make links between stages more precise rather than relying mainly on basic sequencing phrases.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “geothermal zone,” “injection well,” “production well,” “condenser,” and “turbine,” which helps identify the equipment. There are also attempts at more specific terms such as “rotational motion.” However, several spelling errors—“elecricity,” “underneth,” “condensor,” and “clecrtricity”—reduce accuracy, while phrases such as “goes inside” and “gets up by pump” are imprecise or unnatural for describing a process. Some technical detail is expressed in a way that is more elaborate than the diagram requires. Aim for accurate, natural collocations such as “is pumped down,” “is heated,” and “is converted into steam,” and check spelling carefully.

Grammatical Range and Accuracy: Band 5.5

You attempt both simple and more complex sentences, including a relative clause in “steam, which enters into the turbine” and a sequence linked with “After that.” The main stages can generally be understood, but some grammatical errors make relationships unclear. For example, “the cold water become the steam goes through” lacks a clear grammatical structure, and “the cold water goes down and enters … and gets up” does not clearly mark the change from downward to upward movement. There are also agreement and article errors in “the generator, which produce electricity” and “become steam.” Use consistent passive forms for process descriptions, such as “water is pumped down,” “it is heated,” and “steam is produced,” and check subject–verb agreement.

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