JC Geography- rivers

chapter 10

a body of water flowing in a channel downslope under the influence of gravity

what is a river

upper course, middle course, lower course

what are the 3 stages of a river

erosion

processes of the upper course

erosion and transportation

processes of the middle course

transportation and deposition

processes of the lower course

v shaped valleys, interlocking spurs, waterfalls

features of an upper course

meanders, oxbow lakes, floodplains

features of a middle course

levees and deltas

features of a lower course

hydraulic action, abrasion, attrition, solution

4 processes of erosion

rolling, bouncing, solution, suspension

4 processes of transportation

decrease in speed, decrease in volune, increase in bedload

reasons deposition occurs

area of high ground that jut out on either side of the river

what is an interlocking spur

when a river meets sections of hard rock

when is an interlocking spur formed

water smashes rocks

what is hydraulic action

rocks scrape the riverbed

what is abrasion

rocks crash into eachother

what is attrition

rocks dissolve in water

what is solution