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15
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Why is the voltage stepped up to nearly 400 kV whilst the electricity travels across the cables in the national grid.
To reduce energy lost by heating in the cables.
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15
×
What is the term for the rate of energy transfer?
Power
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15
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When using a TV, which type of transferred energy is being wasted?
Heat
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15
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Name 3 fossil fuel energy sources, used to generate electricity.
Coal, Oil, Natural gas
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15
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Which type of power station transfers the energy from naturally hot rocks underground?
Geothermal power station
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trap
No points!
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fairy
Take points!
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25
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gift
Win 25 points!
Okay!
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banana
Go to last place!
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15
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What type of supply does a coal power station produce, A.C or D.C?
A.C
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15
×
What colour is the earth wire in a plug?
Yellow and green
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15
×
What is the Ohms law equation?
V = I x R
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baam
Lose 25 points!
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star
Double points!
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rocket
Go to first place!
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banana
Go to last place!
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monster
Reset all scores!
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rocket
Go to first place!
Okay!
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fairy
Take points!
5
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25
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banana
Go to last place!
Oops!
15
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Burning fossil fuels releases sulfur oxides, what negative environmental effect is caused by sulfur oxides?
Acid rain
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15
×
Why is the voltage stepped down by a transformer, to 230V before it enters our homes?
Safety.
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15
×
What colour is the neutral wire in a plug
Blue
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monster
Reset all scores!
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shark
Other team loses 10 points!
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shark
Other team loses 20 points!
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thief
Give points!
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25
15
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When using a hairdryer, which type of transferred energy is being wasted?
Sound
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