What are the two main processes that form floodplains?
Erosion and deposition
How can flooding lead to floodplain formation?
Because it depositions fine sediment (silt) and builds up as layers
How do meanders impact floodplain formation?
By migrating across the floodplain due to lateral erosion so when they reach the end of the floodplain, they erode the valley side making the floodplains wide