Figure 1 shows how the National Grid connects power stations to consumers - AQA - GCSE Physics - Question 1 - 2020 - Paper 1
Question 1
Figure 1 shows how the National Grid connects power stations to consumers.
Name the parts of the National Grid labelled K, L and M.
K =
L =
M =
Calculate how ma... show full transcript
Worked Solution & Example Answer:Figure 1 shows how the National Grid connects power stations to consumers - AQA - GCSE Physics - Question 1 - 2020 - Paper 1
Step 1
Name the parts of the National Grid labelled K, L and M.
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Answer
K = step-up transformer
L = transmission cables
M = step-down transformer
Step 2
Calculate how many times greater the percentage of electricity generated by gas-fired power stations was in 2018 than in 2014.
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Answer
Percentage in 2018 = 32%
Percentage in 2014 = 8%
Number of times = \frac{32}{8} = 4
Step 3
Explain one environmental effect of generating electricity using a gas-fired power station.
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Answer
(burning gas) releases carbon dioxide which causes global warming.
Step 4
What is a renewable energy resource?
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Answer
An energy resource that can be replenished quickly.
Step 5
Give two advantages of the offshore wind farm compared with the wind farm on land.
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