O-LevelGeographyThe natural environment2217/23 · May/June 2010 · Q28 Marks

Study Fig. 2, which shows data for a hydro-electric power station in northern Europe. [Figure 2]

(a)Describe how the inflow of water to the storage reservoir varies through the year.[3]
(b)Study Table 1, which shows climate data for the area of the reservoir. Month J F M A M J J A S O N D Temperature °C -3 -3 1 8 15 17 21 19 14 8 3 -6 Precipitation mm 35 15 35 60 30 110 80 70 95 80 40 50 Table 1 Give two reasons why the inflow of water to the reservoir is low in February.[2]
(c)(i)Production of electricity varies to meet demand. Which month is likely to have the greatest demand for electricity?[1]
(c)(ii)Suggest a reason for the higher demand in this month.[1]
(c)(iii)Suggest what is happening to the water level in the reservoir during this month.[1]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

Mark scheme

Marking points from the official mark scheme (May/June 2010). The mark or mark type is shown in brackets.

[3] (a) Decreases to March Rapid increase March to end of May/start of June Rapid decrease in June and July Levels out in August and September Decreases to end of year
[2] (b) Low precipitation Frozen precipitation
[1] (c) (i) February
[1] (c) (ii) Winter heating Winter lighting
[1] (c) (iii) Water level falls

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