Rivers Flashcards
What is a river
Rivers are part of the water cycle. They take water form the land, via the surface and flow into the sea
What is the work of a river
Rivers carry out fluvial process. Theres include
Erosion- they wear away the rock
Transportation- they move the material downstream
Deposition- the off load the material onto the banks
What is hydraulic action
This is when the sheer force of fast-flowing water hits the river bed and forces water into the cracks
What is abrasion
Small boulders and stones may scratch and scrape their way down a river during transport , thereby wearing down the river banks and beds
What is Attraction
Effects a rivers bed. When stones first enter a river they will be jagged. As they go down the river they will become smooth
What is solution
Dissolving of rock such as chalk and limestone
What is vertical erosion
It is the deepening of the river bed done mostly by hydraulic action
What is lateral erosion
It is sideways erosion. It weas the bank of the river. This is most evident in the lower course
What is traction
Is boulders are to heavy to move
What is saltation
Is where pebbles bounce downstream
What is suspension
It is light materials in the flow of the river
What is solution
Is materials are dissolved in the water
What are the features of a river basin
Mouth Tributary Source Watershed Channel River basin Floods
What is the long profile of a river
It shows the gradient of a river from source to mouth
What is the cross- profile of a river
Sideways (cross-section) view of the channel and/ or the valley
