AQA Geography A Level Training Exam And Complete Solutions 2024.

Fetch - Answer Distance over which the wind blew. Wave break ratio - Answer The ratio of the wave height to the wave length cannot be more than 1:7 as this is when a wave breaks. Swash - Answer When a wave breaks, water is washed up the beach and can deposit sediment. Backwash - Answer Water runs back down the beach and is capable of removing sediment from a beach. Constructive Waves - Answer Add sediment to the shallow gradient beach and have high swash and low backwash. Longer wavelength, lower height, low wave frequency, and elliptical orbit. Destructive Waves - Answer Take sediment from the steep beach and have high backwash and low swash. Shorter wavelength, higher height, more frequent wave frequency, and circular orbit. Sediment Cell - Answer A length of coastline, which is relatively self-contained as far as the movement of sand or shingle is concerned, and where interruption to such movement should not have a significant effect on adjacent ones. Tides - Answer Regular rising and falling movements of the surface of the sea and caused by the effects of the gravitational pull of the moon and sun on the oceans. Spring Tides - Answer Sun, moon and earth all in one straight line -- highest high tides and lowest low tides = largest tidal range.