Analyse the data shown in Figure 7 - AQA - A-Level Geography - Question 4 - 2018 - Paper 1
Question 4
Analyse the data shown in Figure 7.
[Graph of ground temperatures cannot be reproduced here due to third-party copyright restrictions.]
Worked Solution & Example Answer:Analyse the data shown in Figure 7 - AQA - A-Level Geography - Question 4 - 2018 - Paper 1
Step 1
The bore holes show increasing responsiveness to ambient temperatures
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Answer
As the borehole's depth decreases, the temperature readings become more sensitive to changes in ambient temperatures. This indicates a clear relationship between the depth of the borehole and its responsiveness.
Step 2
Temperature at the surface shows the greatest variation
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Answer
The bore hole nearest the surface (0.25m depth) exhibits the greatest fluctuations in temperature, ranging from a low of -12°C in April 2010 to a high of 26°C in June 2015. This pattern reflects seasonal temperature changes more prominently than deeper measurements.
Step 3
Analysis of temperature trends across different depths
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The trend indicates that as depth increases, the temperature becomes more stable, particularly beyond the 2.5m mark. This could be attributed to the insulating properties of the ground, which mitigates extreme ambient temperature variations.
Step 4
Limited temperature variations at deeper levels
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For depths around 19m, the temperature response is minimal, varying only slightly and indicating a consistent substratum temperature. This could suggest that deeper soil layers respond less dramatically to seasonal shifts.
Step 5
Observations on future trends
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It is worthwhile to note that while current measurements show certain trends, continued monitoring is essential as warming trends could affect borehole temperatures over time, especially at shallower depths.
Step 6
Conclusion on data analysis
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In conclusion, Figure 7 provides significant insights into the temperature variations with depth, highlighting the complex interplay between ambient conditions and ground temperature at varying depths of the borehole.
