Process Diagram

Band 7+: The diagrams below show the amount of energy lost in 100 units when it is generated from black coal and when it is generated from brown coal. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

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Image for topic: The diagrams below show the amount of energy lost in 100 units when it is generated from black coal and when it is generated from brown coal. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

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The image illustrates the loss in the generation of electricity from brown coal and black coal: for brown coal, fuel energy input is 100 units, with a power station loss of 70 units, delivering 30 units to transportation and distribution that incur a 3-unit loss, resulting in a consumer receiving 27 units; for black coal, fuel energy input is 100 units, with a power station loss of 68 units, delivering 32 units to transportation and distribution that incur a 3-unit loss, resulting in a consumer receiving 29 units.

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

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The diagram illustrates the amount of energy lost in 100 units when it is generated from brown coal and when it is generated fro black coal.

Overall, it can be seen that when energy is produced from black coal, less of it is lost.

Looking at the details, when generating energy from black coal, fuel is transported to a power station. At this stage, 68 units of energy are lost. As a result, 32 units of energy are transported and distributed, during which 3 more units of electricity are lost. At the end, a consumer receives 29 units of energy, which is generated from black coal.

Meanwhile, while producing energy from brown coal, all the stages are similar except the amount of energy lost during the processes occuring at a power station. At this stage, 70 units of energy are lost in the process of extracting electricity from brown coal. Subsequently, a consumer receives 27 units of elecricity.

Word Count: 158

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Overall Band Score

7.5

(+/- 0.5)

Vocabulary Complexity:
B2 - Upper Intermediate
Opt for even more advanced words when appropriate.

Grammar Mistakes: N/A

Vocabulary Repetition:

energy: 9

units: 7

black: 4

generated: 3

brown: 3

Try using synonyms for the above words

Task Response

The report adequately addresses the task by summarizing the main features of energy loss in the generation of electricity from both black and brown coal. The comparison between the two processes is clear. However, the report could benefit from a more structured approach, perhaps by grouping similar information together or using more varied language to describe the processes. Additionally, while the key figures are mentioned, the report could be enhanced by highlighting the proportional differences more explicitly to emphasize the comparative aspect of the task.

Coherence & Cohesion

The report is generally well-organized and easy to follow. The structure is clear, with an introduction, overview, and detailed paragraphs. However, transitions between sentences and ideas could be smoother in some places. For instance, the transition between the overview and the detailed description of black coal energy generation could be improved. Consider using cohesive devices to link ideas more explicitly.

Lexical Resource

The vocabulary used is adequate and appropriate for the task. There is room to enhance the range and sophistication of the language. For example, instead of repeatedly using 'energy lost,' try incorporating synonyms or more descriptive phrases like 'energy dissipation' or 'reduction in energy output.' Also, consider using more precise vocabulary related to energy production and distribution.

Grammatical Range & Accuracy

The report demonstrates a good command of grammar with only minor errors. The sentence structures are generally accurate and varied. Pay close attention to prepositions and articles, as these are areas where minor errors sometimes occur. Proofreading carefully can help eliminate these small mistakes.

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