1.2.1a) Riverland forms Flashcards
What are v shaped valleys
These are found in the upper course of a river when most of the erosion is vertical, they have steep sides and narrow valley floors
What are floodplains
In the lower course, a river during a flood, for example, breaks its bank and creates a floodplain deposition occurs on levees on each side of the river
What are meanders?
Meanders are found in the lower cause of the river. They are bends in the river caused by lateral (sideward) erosion.
Fluvial erosion
What is Abrasion
Is when rocks carried in the flow of the river, smash into Banks bend of the river 
Fluvial erosion
What is attrition?
Is when rocks crashed together as a move along in the river
Fluvial erosion
What is hydraulic action?
Is when air is forced into cracks in the Banks bed of the river, forcing them to expand 
Fluvial erosion
What is solution?
Is when chemicals in the river dissolve minerals in the bank/bed of the river 
Fluviral transportation
What is solution?
Is when dissolved minerals are carried in the flow of the water 
Fluviral transportation
What is suspension?
Is when fine particles are floats in the river flow
Fluviral transportation
What is saltation?
Is when rocks bounce along the river bed
Fluviral transportation
What is traction?
It’s when boulders roll over small rocks in the river bed 
What is Fluviral deposition
 When the flow of water slows, it has less energy to carry sediments, so it’s deposited this can be on the inside bend of a meander or the Banks and floodplain of a river when it floods 
What is waterfalls and gorges
These form in the upper and middle course of a river where they are different rock types  overtime the soft rocks are road backwards, creating a hard rock, overhang, and eventually collapsed into the plunge pool, causing the waterfall to retreat backwards and leaves behind a steep side, narrow bottom valley called a gorge 
