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Process Diagram

Band 6+: 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.

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Image for topic: 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.

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The image shows a labeled diagram of a geothermal power plant, with annotations indicating the flow of cold water down 4.5 km into the injection well, through the geothermal zone containing hot rocks, and up the production well as hot water, which powers a turbine connected to a generator that produces electricity, and then passes through a condenser to be pumped back down, completing the cycle.

Given the complexity of the image, the above description may not be entirely accurate.

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Note: Both the topic and the answer were created by one of our users.

The diagram illustrates how electricity is produced with the help of geothermal energy.

Overall, there are five steps in the process. Starting from pumping down the cold water to the geothermal zone, to producing electricity from the generators and sending it to the electrical towers.

In the first step, the cold water is collected in a tank and then pumped down to 4.5kms through the injection well. Next the water goes through hot rocks in the geothermal zone where it is heated up. Then the water reaches the production well following which it is pumped up on the surface of land in a condenser.

The last two steps are carried out above the ground. First, steam is produced by the hot water in the condenser. This steam is then passed through a narrow pipe to the turbine which makes it rotate and generate energy. This energy is passed on to the generator to generate electricity. Finally, the generator send this to the electricity tower.

Word Count: 164

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Overall Band Score

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Vocabulary Complexity:
B2 - Upper Intermediate
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Grammar Mistakes: N/A

Vocabulary Repetition:

water: 5

electricity: 4

geothermal: 3

through: 3

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Task Response

The response provides a basic overview of the process of producing electricity using geothermal energy. However, there are some inaccuracies and omissions in the report, such as not mentioning the injection well, the role of hot water in powering the turbine, and the condenser's function in the cycle.

Coherence & Cohesion

The report is mostly coherent and cohesive, with a clear structure of introducing the steps in the process. However, there are some issues with linking the steps together smoothly, and the use of transition words could be improved for better flow.

Lexical Resource

There is a moderate range of vocabulary used, but some inaccuracies and repetitions are present. The report would benefit from more precise and varied word choices to describe the process accurately.

Grammatical Range & Accuracy

The report demonstrates a mix of simple and complex sentence structures. However, there are errors in subject-verb agreement, prepositions, and word forms that affect the overall accuracy of the writing.

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Band 6+: 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.

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Overall Band Score

Task Response

Coherence & Cohesion

Lexical Resource

Grammatical Range & Accuracy

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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.

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.

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