Question 1 Report
The table below gives results from a coastguard survey after a storm surge at a low-lying settlement. Fig. 1 shows the route of the surge across the beach and through a gap in the dunes. The coastguard measured water depth on the same road at different distances inland. These figures will help decide where evacuation signs should be placed.
| Distance inland from beach (m) | Maximum water depth (cm) |
|---|---|
| 0 | 94 |
| 100 | 71 |
| 200 | 39 |
| 300 | 12 |
(a) Which distance had a water depth of 39 cm? [1]
(b) Draw a line graph of water depth against distance inland. [2]
(c) Outline two reasons why repairing the dune gap could reduce flood risk. [3]
(a) 200 m [1] (b) Award [1] for correctly labelled axes and sensible scale; [1] for points at 0,94; 100,71; 200,39; 300,12 joined appropriately (c) Dunes form a raised barrier to water [1]; repaired vegetation and sand trap or absorb wave energy [1]; less water can pass directly through the gap to homes and road [1]
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