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Process Diagram

Band 7+: 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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The image depicts the process of generating electricity using geothermal energy.

Producing electricity is a 5-step process. Generally speaking, we can see that cold water is turned into steam which activates a generator that produces electricity. The geothermal energy is used early in the process to change the temperature of the water.

At the beginning of the process, cold water is pumped over 4 and a half kilometers underground through a pipe labeled the injection well. There, the water then comes into contact with hot rocks, inside what is named the geothermal zone. In this zone, the water is heated, and is taken to the production well, another pipe which returns the heated water to the surface.

Once on the surface, the hot water is sent to a condenser, the steam from which is fed into a turbine. This steam spins the turbine, which in turn powers a generator that produces electricity. Finally, this electricity is sent into pylons for use in the power grid.

Word Count: 165

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Overall Band Score

7.5

(+/- 0.5)

Vocabulary Complexity:
C1 - Intricate
Strive to incorporate even richer and more precise language.

Grammar Mistakes: N/A

Vocabulary Repetition:

water: 6

electricity: 5

process: 4

which: 4

geothermal: 3

steam: 3

Try using synonyms for the above words

Task Response

7.5

The response provides a clear overview of the process of generating electricity using geothermal energy as shown in the diagram. However, there are some minor inaccuracies and omissions in the report, such as not mentioning the depth of the injection well, the purpose of the condenser, and the completion of the cycle by pumping the water back down. More specific details and comparisons could enhance the response further.

Coherence & Cohesion

7.5

The report is generally well-organized with a clear introduction, body, and conclusion. The information is presented in a logical sequence, making it easy to follow. Transition words and cohesive devices are used effectively to connect ideas. However, there could be a smoother flow between some sentences and paragraphs for improved cohesion.

Lexical Resource

7.5

There is a good range of vocabulary used throughout the report, with some technical terms related to geothermal energy appropriately included. However, there is room for improvement in terms of more precise and varied vocabulary choices to describe the process in more detail. Additionally, some repetition of words and phrases could be avoided for a higher score.

Grammatical Range & Accuracy

7.5

A variety of sentence structures are used, demonstrating a good level of grammatical range. The majority of the sentences are grammatically correct, with only a few minor errors in punctuation and word choice. To improve, more complex structures and error-free sentences could be incorporated for a higher score.

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Band 7+: 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

Answers On The Same 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.

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.

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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