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AQA GCSE · Question 05.5 · Energy
Figure 7 shows that the demand for electricity increased between 06:00 and 09:00.
Solar power could have met the demand if there were enough solar panels installed in the UK.
Explain why.
Figure 7 shows that the demand for electricity increased between 06:00 and 09:00.
Solar power could have met the demand if there were enough solar panels installed in the UK.
Explain why.
How to approach this question
1. Consider what happens to sunlight between 06:00 and 09:00. Is it getting lighter or darker?
2. How does the amount of sunlight affect the power output of solar panels?
3. Connect this to the information from the graph, which shows that electricity demand is also increasing during this time.
Full Answer
Between 06:00 and 09:00 is in the morning when the sun is rising. This means the light intensity is increasing, so the power output from solar panels would also be increasing, which matches the increasing demand for electricity at that time.
The question asks why solar power is suitable for meeting the rising electricity demand in the morning (06:00-09:00).
1. **Time of Day:** 06:00 to 09:00 is the morning. During this period, the sun rises, and the intensity of sunlight increases.
2. **Solar Panel Output:** Solar panels generate electricity from sunlight. The power output of a solar panel is directly related to the intensity of the light falling on it. Therefore, as the sun gets higher and brighter in the morning, the power generated by solar panels increases.
3. **Matching Demand:** The graph shows that electricity demand also increases during this period as people wake up and businesses start to open. The increasing supply from solar power naturally matches this increasing demand.
Common mistakes
✗ Just saying "it is daytime". You need to be more specific about the fact that sunlight is *increasing* during this period.
✗ Not linking the presence of sunlight to the power output of the panels.
✗ Forgetting to mention that demand is also increasing, so the supply and demand trends match.
Practice the full AQA GCSE Physics Foundation Tier Paper 1
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