The map below is of the town of Garlsdon. A new supermarket (S) is planned for the town. The map shows two possible sites for the supermarket.

This

diagram illustrates how

the

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electricity is generated step by step in a hydroelectric

power

station.

Firstly

, the

water

that comes from the river is stored in the high-level

reservoir

by the dam,

while

the dam is opened in the daytime and closes at night.

However

, in the day time

water

flow is used to generate the

power

.

Secondly

, the flow has come into the

power

station which has reversible turbines and an operating generator.

Moreover

, we can see that there are

power

lines to national grids from the generator.

Lastly

,

water

then

stores in a low-level

reservoir

.

Nevertheless

,

in

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at

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Add a comma

,night-time

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night-time

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night time

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this

system works reversibly.

Water

which is stored in the low-level

reservoir

has pumped to

high-level

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the high-level

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reservoir

by using generators in the

power

station.

Water

flow is

stores

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stored

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in the high-level

reservoir

and the dam is closed at that time.

Overall

, looking for more information,

this

figure has shown four main stages

about

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of

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energy generation from the main step to the

last

.