The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The diagram below shows how electricity is generated in a hydro

power

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station. On the diagram, we can see a pretty interesting process to generate energy from the

water

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.

Firstly

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, we can see that

water

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is flowing from the river to the so-called High-level

reservoir

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.

That is

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the special space to collect

water

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that is

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also

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blocked by the dam, which doesn’t let it flow away. Another interesting point is that people open it during the day, but at night they closes dam to save more

water

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, which is flowing from the high-level

reservoir

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to the

power

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station during the day, but at night people are usually pumping it up.

Secondly

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,

water

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flows to the generator in the

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station. A generator looks like a motor, which is spinning at a high speed, and with that , turning

this

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energy into electricity

that is

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going to a generator. After that , electricity goes through the

power

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lines and is distributed to the national grid. But what is actually happening to the

water

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? Well, how did I say, in a day it flows down, and goes to the low-level

reservoir

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, but at night people pump it back to the High-level

reservoir

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. That's the whole process.