Band 5.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.0 · Cambridge IELTS 12 · 2026-10-27

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 chart illustrates how electricity is produced using geothermal energy

The depiction of the chart here as follows

the cold water is pumped to the geothermal zone through injection well the geothermal zone consists with hot rocks which turns cold water into hot water

The hot water is forwarded to condenser through production well where the condenser subjects hot water to transform into steam

The steam goes through turbines where with the help of turbines steam produces electricity

The production of electricity is carried out with the help of a generator with which turbines worked out efficiently

AI examiner evaluation

Task Achievement / Task Response: Band 4.5

You identify the main process and include several relevant stages: cold water enters through the injection well, is heated by hot rocks, returns through the production well, and becomes steam. However, the account is incomplete and contains a key inaccuracy: the turbine does not itself produce electricity; it drives the generator, which generates it. The overview is also missing, and details such as the 4.5 km depth and the sequence from steam to turbine to generator are not clearly reported. The response is substantially below the required 150 words, leaving the stages underdeveloped. To improve, give a concise overview of the full process and describe each stage accurately, including the roles of the turbine and generator.

Coherence and Cohesion: Band 5.5

The stages are presented in a broadly sensible order, moving from water being pumped underground to the production of electricity. Separate paragraphs also help distinguish parts of the process. However, the response has no clear introductory overview, and the final two sentences repeat the relationship between the turbine and electricity without explaining it clearly. Linking is limited, with each stage mostly presented as a separate statement rather than connected into a continuous process. Use sequencing expressions such as “after being heated” and “the resulting steam then” to make the progression explicit, and organise the response into an introduction and a logically developed process description.

Lexical Resource: Band 5.5

You use some relevant process vocabulary, including “injection well,” “geothermal zone,” “condenser,” “steam,” and “generator,” which helps identify the main components. However, several choices are imprecise or awkward for describing this diagram. “The depiction of the chart here as follows” is unnatural, “subjects hot water to transform into steam” is an unsuitable collocation, and “turbines worked out efficiently” does not clearly express the generator’s function. The range is also limited, with repeated use of “with the help of.” Aim for precise process verbs such as “passes,” “heats,” “converts,” and “drives,” and use the diagram’s component names consistently.

Grammatical Range and Accuracy: Band 5.0

The response includes simple sentences and attempts to connect ideas with clauses, as in “the geothermal zone consists with hot rocks which turns cold water into hot water.” However, the structures are limited, and errors frequently affect clarity. For example, “consists with” has an incorrect preposition, “which turns” does not agree with the plural “hot rocks,” and “where with the help of turbines steam produces electricity” has an unclear clause structure. Capitalisation and sentence punctuation are also inconsistent, including the lowercase opening of several sentences and the absence of a final full stop. Practise accurate simple process sentences first, then combine them using clear time clauses and passive forms.

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