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 = _____... 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
Given that 8% was generated in 2014 and 32% in 2018,
the formula used to calculate the number of times greater is:
Explain one environmental effect of generating electricity using a gas-fired power station.
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Answer
One environmental effect of generating electricity using a gas-fired power station is that it releases carbon dioxide into the atmosphere, which contributes to global warming and climate change.
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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Answer
Higher power output than land-based wind farms.
Lower variation in power output, providing more reliable energy generation.
