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

is generated in a station, powered by

water

.

Overall

, it can be seen that

this

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

in the dark.

Firstly

,

water

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

dam

Add a comma

,dam

show examples

there is an intake

that is

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

water

drains through

this

intake in a flow

due to

creating electricity in the

power

station. In

this

,station there is a generator with reversible turbines that operate

this

part in the daytime (Part of the

water

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

power

is spread through

power

lines and

then

reaches the national grid. During the nighttime the

water

from

this

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

water

supply is restored and ready for reuse in the morning.