The diagram below shols 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 illustrates the way that electric

power

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is generated in a station, powered by

water

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.

Overall

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, it can be seen that

this

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is a chain process, man-made, which has a few different stages resulting in the production of electricity during the light part of the day and restoring

water

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in the dark.

Firstly

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,

water

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runs from a river into a dam with a high-level reservoir. At the bottom of the

dam

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,dam

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there is an intake

that is

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open during the day and closed at night. In , the daytime the

water

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drains through

this

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intake in a flow

due to

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creating electricity in the

power

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station. In

this

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,station there is a generator with reversible turbines that operate

this

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part in the daytime (Part of the

water

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flows in a low-level reservoir). From the generator,

power

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is spread through

power

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lines and

then

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reaches the national grid. During the nighttime the

water

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from

this

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low reservoir is pumped from the turbines, climbing its way back to the dam. That way the

water

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supply is restored and ready for reuse in the morning.