… there’s wind power … which is clean fairly predictable and can be seen on hillsides all...
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Transcript of … there’s wind power … which is clean fairly predictable and can be seen on hillsides all...
…there’s wind power…
which
is
cleanfairly predictable
and
can be seen
on hillsides
all around Wales
…solar panels or “photovoltaic cells”…
can
turn
Sunlight
directly
into
electricity
…like this massive 11 MegaWatt solar power station…Near
Serpa
in
Portugal
comprising
Fifty two thousand
solar
panels
…around which sheep graze and frolic happily…
…and we can use it to heat water too….
Like this
system
being
used
on a
rooftopin
Israel
…like the PS10 “solar power tower” in Seville in Spain…
…and uses the steam to turn turbines and generators
to produce electricity
which
boils
water to make
steam
…or energy from water…
like
the Severnestuary
which
could be used
To generate
lots of electricity
…by holding the water behind a big “barrage”
when the tide is high…
…so the water that flows through…
…and gets trapped behind the barrage…
…and when the tide goes back down…
…we let all the water out...
making lots of electricity…!
…we can use crops for fuels – we call these biofuels….
Lots of cars now use
vegetable oil
for
fuel
…we also have nuclear power…
which doesn’t release
harmful gases
into
the
atmosphere
Although it
does produce
harmful
Radioactive
wasteWhich can
cause other
problems…
…we can get power from coal or oil fired power stations………..
Burning coal
releases
harmful gases
into the
atmosphere
Fuels are burned
to release
heat energy
which boils Waterto produce
steam which
spins
turbineswhich
turn generators!
…and from wood fired power stations
Which releases
LESS
harmful gases
than coal
…some of this power can be
produced by hydroelectricity
…at Ffestiniog
By power stations like this one…