BBC NEWS | Science/Nature | Quiz: Renewable energy

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Last Updated: Tuesday, 9 November, 2004, 15:31 GMT

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Quiz: Renewable energy

How much energy does the sun pour onto the Earth?

With global energy demand set to increase 60% by 2030 and the world still reliant on fossil fuels, saving energy and developing renewable supplies will be critical to a sustainable future.

How much do you know about clean, green sources of power?

Question 1

How much of the total energy used, over time, in the average video recorder in Britain, is used while it is on standby?


	A: Up to 15%


	B: Up to 40%


	C: Up to 60%


	D: Up to 85%

Question 2

The energy saved by recycling one aluminium drinks can is enough to run a TV for how long?


	A: 30 minutes


	B: One hour


	C: Three hours


	D: Ten hours

Question 3

How much energy does a state-of-the-art energy efficient washing machine use compared to an old, inefficient one?


	A: Two thirds less


	B: Half as much


	C: One third less

Question 4

Which of the following are currently being used to generate electricity?


	A: Human excrement and pig excrement


	B: Chicken excrement and pig excrement


	C: Chicken excrement and human excrement


	D: Chicken, pig and human excrement

Question 5

Biodiesel is a natural, renewable fuel which can be used in diesel engines � which of the following can it NOT be made from?


	A: Soya beans


	B: Used chip fat


	C: Carrots


	D: Oilseed rape

Question 6

The amount of energy poured onto the Earth by the Sun every 15 minutes equivalent to what?


	A: The world�s electricity needs for a decade


	B: The world�s electricity needs for a year


	C: The world�s electricity needs for a month


	D: The world�s electricity needs for a day

Question 7

Hydrogen is a cleaner vehicle fuel than petrol and diesel, but electricity is needed to produce the hydrogen. If all Britain�s vehicles were converted to run on hydrogen power, how many more nuclear power stations would be needed to generate the electricity?


	A: 10


	B: 50


	C: 100


	D: 500

Question 8

The heat energy stored in the uppermost 10km of the Earth�s crust is equivalent to how many times the total energy stored in all the world�s oil and gas?