UK Physical Landscape Flashcards
Weathering
The physical, biological, or chemical breakdown of solid rock by the action of weather or plants
Biological weathering
When the living things (Animals and plants) erode rocks
Chemical weathering
Minerals in rocks react with chemicals in the rain
Physical weathering
The change of rocks over time as a result of natural reactions. e.g. Freeze thaw
Slope processes
The types of mass movement
Fetch
The distance over which the waves travel
Prevailing wind
The dominant wind direction
Swash
The movement of water up the beach
Backwash
Water drawing back into the sea
Beach profile
The shape of the beach, which is influenced by the type of wave
Constructive waves
Usually comes during the summer months, calm and builds up beach material
Destructive waves
Usually comes during the winter, strong backwash and removes beach material
The coastal zone
The changing boundary between land and sea. e.g. Estuary, beach or cliff
Wave-cut platform
An area of smooth rock that is left where the cliff line once was. Caused by erosion
Hydraulic action
Is the force of water along the coast, or within a stream or river
Abrasion
The scratching and scraping of a river bed and banks by the stones and sand in the river
Attrition
The wearing away of particles of debris by the action of other particles, such as river or beach pebbles
Discordant
Alternates between bands of hard rocks and soft rocks, so the rock strata is at right angles to the coast
Concordant
Follows the ridges and valleys of the land, so the rock strata is parallel to the coastline
Strata
Distinctive layers of rock
Joints
Small, usually vertical cracks found in many rocks
Faults
Large cracks caused by past tectonic movements, where rocks have moved
Longshore drift
Waves approach the beach at an angle and move the sediment along the beach
Storm surge
Arise in sea level beneath a severe storm (low pressure system).
Heightened waves driven onshore by strong winds (wind drift)