Fichas
Coasts ♡
Fichas del conjunto (16)
- 1What influences the size and energy of waves ? ♡How long the wind has been blowing, the strength of the wind & how far the wind has travelled (the fetch) ♡
- 2What is swash ? ♡When a wave breaks and water is washed up on the beach ♡
- 3How are waves created ? ♡By wind blowing over the sea, which creates friction - producing a swell in the water, the energy of the wind causes water particles to rotate inside the swell, this moves the wave forwards ♡
- 4What is backwash ? ♡Water running down the beach ♡
- 5What are destructive waves ? ♡Waves created in storm conditions which wave energy is high and has traveled over a long fetch, they tend to erode the coast ♡
- 6What are constructive waves ? ♡Waves created in calm weather, when they break they deposit material which builds up beaches ♡
- 7What is hydraulic action erosion ? ♡Trapped air in joints and cracks on a cliff face, when a wave breaks the trapped air is compressed which weakens the cliff and causes erosion ♡
- 8What is abrasion erosion ? ♡When rock and sand in waves grind down cliff surfaces like sandpaper ♡
- 9What is attrition erosion ? ♡When waves smash rocks and pebbles on the shore into each other, and they break up and get smoother ♡
- 10What is solution erosion ? ♡There's acid in sea water which dissolves some rocks such as chalk and limestone ♡
- 11How is material in the sea transported ? ♡The material is eroded from cliffs, transported by long-shore drift along the coastline and then brought inland by waves ♡
- 12What is long-shore drift ? ♡Continual swash and backwash transports material sideways along the coast. This movement of material is called long-shore drift and occurs in a zigzag ♡
- 13What is saltation ? ♡Material which is bounced along the sea bed ♡
- 14What is traction ? ♡Pebbles and larger sediment which is rolled along the sea bed ♡
- 15What is deposition ? ♡When the sea loses energy, it drops the sand, rock particles and pebbles it's been carrying ♡
- 16What forms of weathering are there ? ♡Chemical (rainfall) & biological (animals and roots) ♡