2787147
Descrição
Mapa Mental por tiafisher99, atualizado more than 1 year ago
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Criado por tiafisher99
mais de 9 anos atrás
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Wind Power
- Wind can be used to turn a
turbine,which drives an
electricity generator.
- The sustainable
development commission
have said that "the UK has
the best wind resources in
Europe."
- They are about 35% efficient and can
generate an average of 2W per square
metre so a large amount of space is needed.
- Less than 1% of the land on
a wind farm is taken up by
the base of the turbines.
- If wind speed is too low they cannot produce
electricity. If it's too high they have to be shut
down to avoid damage. Wind conditions are
good for turbines for about 30% of the day.
- If we covered the windiest
10% of the country we
could generate 20kWh per
person per day.
- Turbines are noisy and
large. They can be a threat
to wildlife. It is thought
that 440,000 birds are
killed each year by wind
turbines in the US.
- Electricity costs
8 pence per kWh.
They usually lst
for about 20 year.
- 57 million birds are killed
by cars, 100 million are
killed ny colliding with
glass and 500 million are
killed by cats every year.
Anexos de mídia
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