coasts and rivers Flashcards
arch
a passage that was eroded by waves and eventually broke through into an arch
cave
a large hole in the cliff caused by waves forcing their way in the cracks in the cliff
cliff
a steep high rock formed by weathering and erosion along the coastline.
erosion
the wearing away and removal of material by a moving force e.g.. a breaking wave
hydraulic power
the breaking waves compress the air in the cracks in the cliff and that causes the cracks to widen which them ends top breaking the rock off
mass movement
when weathered material moves downhill because of the force of gravity. The speed can cary considerably
slumping
involves a whole segment/area of cliff moving down wards along a line of weakness at a rapid pace
transportation
the movement of eroded material
waves
ripples in sea cause of the wind blowing over surface of sea. large waves are formed when winds are strong and cross large areas of water.
stack
fast movement of mass which involves a part of a cliff moving downslope
wave cut platform
a rocky area around sea level representing old cliffs
mechanical weathering
weathering process which causes physical energy loss without any change of chemical composition of the rocks
attrition
when erosion is caused by rocks being crushed together making smaller pieces
chemical weathering
the rotting of rock caused bu chemicals which is found in sea water
deposition
when material transported by the sea is dropped because of the energy loss in the sea
