Band 5.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.0 · Cambridge IELTS 12 · 2026-10-21

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)

USE OF GEOTHERMAL ENERGY IN PRODUCTION OF ELCTRICITY:

Parts of the generator:

1. Cold Water Tank

2.Condenser

3.Turbine Chamber

4.Genertor

5.Electric Tower

Procedure:

1. Cold water from tanks presnt on the surface of the ground.

2. This water is pumped down into ground and and it is reached to Geothermal Zone (this is zone where different layers of Hot rocks are present).

3. In this portion, water heats up and when it is observed that water is heated enough then water is pumped up through pumps into large tank placed on the earth surface.

4. This tank is large Condenser that has very low temperure and it converts water into steam.

5. Now this steam is allowed to enter to a large chamber that contain the Turbine and going through turbines steam passes through Generator.

6. Steam is converted into the Electricity in generator and transferred to the Electric tower.

AI examiner evaluation

Task Achievement / Task Response: Band 4.5

You identify the main stages, from cold water being sent underground to electricity generation, and include the geothermal zone and the turbine-generator sequence. However, the account contains important inaccuracies and omissions, which make the process only minimally described. The diagram shows water travelling down an injection well, through hot rocks, and back up a separate production well; your response does not distinguish these wells or mention the stated depth of 4.5 km. It also misrepresents the condenser as a tank with a low temperature, whereas it releases steam, and says steam is converted into electricity in the generator. There is no clear overview of the process as a whole. Focus on accurately reporting the stages and their relationships, without adding unsupported details such as pumps or a temperature claim.

Coherence and Cohesion: Band 5.5

The numbered “Parts” and “Procedure” sections give the response a recognisable structure, and the stages are generally presented in the order in which they occur. This helps the reader follow the broad sequence. However, the parts list is confusing because it labels the condenser, turbine, generator and electric tower as parts of the generator, rather than components of the power plant. The numbered procedure also relies heavily on “This,” “In this portion,” and “Now,” and some links between stages are unclear—for example, the transition from the condenser to the turbine and generator. Organise the response into a short overview followed by a connected description of the process, using clear references such as “the heated water” and “the resulting steam.”

Lexical Resource: Band 5.0

You use relevant process vocabulary, including “Geothermal Zone,” “Condenser,” “Turbine,” and “Generator,” so the reader can identify several key components. However, the range is limited and some word choices or collocations are inaccurate, which can make the process difficult to picture. For example, “large tank” is not an accurate description of the condenser, “very low temperature” is unsupported, and “Electric Tower” is less precise than the diagram’s electricity-transmission pylon. Spelling errors such as “ELCTRICITY,” “Genertor,” “presnt,” and “temperure” are also noticeable. Build a more precise set of process verbs and component names, and check spelling carefully; this will make the description clearer and more appropriate for an academic report.

Grammatical Range and Accuracy: Band 5.0

The response attempts some longer sentences and sequencing clauses, such as “when it is observed that water is heated enough then water is pumped up,” but these structures are often faulty. Errors in agreement and sentence construction appear in “a large chamber that contain the Turbine” and “steam passes through Generator.” The opening procedure steps also contain incomplete or awkward constructions, including “Cold water from tanks presnt on the surface of the ground.” Repeated use of simple numbered statements limits grammatical range, while missing articles and inconsistent sentence punctuation further affect accuracy. Practise forming clear passive process sentences, for example, “Cold water is pumped down the injection well” and “The heated water is brought back to the surface,” then connect these accurately with sequencing clauses.

See this exact question answered at other band scores. The same prompt compared across bands.

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