Rivers Flashcards
Source
The beginning of the river
Course
Route a river takes to the sea
Confluence
The point of witch 2 rivers or streams join together
Mouth
The point where a river comes to the end
Drainage basjn
The area of land drained by the river
Watershed
The are of Hugh ground which separates two drainage basins
Estuary
The part of a river mouth that is tidal
Youthful stage
Steep
Fast flowing
Low volume of water
Eroisn
V-shaped valley
Mature stags
Gentle sloping
River starts to slow down
High volume of water
Eroisn and deposition
Meanders
Old stage
Levelling off
Slow moving
Largest volume of water
Deposition
Flood plains
Eroisn
The river wears the landscape away
Transportation
The river carries the material that it has eroded
Deposition
The river drops the material it was carrying
Levee
A build up of alluvium on the banks of a river
Caused by floods
Example of levees
Lower course of the river liffey
In times of a low flood
Material is deposited on river bed. Raises the height of the riverbed
In times of high flood
River floods and covers the flood plain, river deposits sediment on the flood plain as slowed down
After many floods
River builds a raised bank on either side called levee
The heavier material
Is deposited on river banks and lighter material os carried further onto the flood plain
Tributary
Small river which flows into the main river
Landforms of youthful stage
V-shaped Valley
Waterfalls
Interlocking spurs
Landforms of mature stage
Meanders
Oxbow lake
Landforms of old stage
Flood plains
Levees
Processes of eroisin
Hydraulic action
Abrasion
Attractive
Solution
Hydraulic action
Eroisin carried out by the force of the flowing water in the river
Abrasion
The river uses its loads to erode fhe bed and banks
Attrition
The rivers load is worn down when the pieces collide so that the stones are smoothed and made smaller
Solution
Some rocks such as limestone are dissolved in the river
