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GCSE Geography · key term
A wave whose backwash is stronger than its swash, tending to remove sediment from a beach.
Used by AQA and Edexcel
Specification 3.1.3.2 · Paper 1
Revise: Wave Types and Coastal ProcessesDestructive waves have a stronger backwash that carries more material back towards the sea. A beach can therefore change as wave conditions change.
Paper 2
A steep, relatively high-frequency wave with backwash stronger than its swash, which tends to remove beach material.
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Destructive waves are relatively high and steep, with short wavelengths and a high frequency. Their backwash is stronger than their swash, so they tend to drag beach material away.