factors affecting deposition

Question 1

braided rivers/channels

Answer 1

main channel separates into a number of smaller interlocking channels. the channel is now highly unstable and its form changes constantly.

channel gradient slightly steeper than that of a meandering stream
load that contains large proportion of coose material
highly variable discharge

Question 2

leeves

Answer 2

raised ridges running parallel to the edge of the channel. formed by repeated flooding of a river. when river floods, its velocity drops as the floodwaters spill out of the channel.

how often floods happen

Question 3

flood plains

Answer 3

land on either side of a river deposited by floods. repeated flooding and deposition leads to the build up of allvium and forms the floodplain, a low relief feature of a river valley

erosion of bluffs
low gradient=meanders

Question 4

deltas

Answer 4

deposition is increased if water is salty, as salt particles group together and become heavier (flocculation) vegetation also slows down water. coarser material deposited 1st

carry large volume of sediment
enter a still body of water e.g. sea/lake. if not longshore drift occurs