Channel processes creating meanders and oxbow lakes

Question 1

meanders

Answer 1

bend in the rivers course e./g Yarn (river tees)

Question 2

when does a river begin to meander?

Answer 2

when water begins to flow around pools and riffles as the thalweg avoids them, causing lateral erosion. it exaggerates over time=bends

Question 3

when is a river cliff formed?

Answer 3

when helicordial flow causes a river to flow towards the outer banks, the bottom flow is towards the inner bank…causing variations in the cross section as well as variations in erosion and deposition. these variations give rise to river cliffs on the outer banks and slip off slopes.

Question 4

riffle

Answer 4

shallow parts of the water where deposition occurs

Question 5

thalweg

Answer 5

line of maximum velocity in a river

Question 6

pools

Answer 6

deep parts of rivers (where it travels fastest)

Question 7

centrifugal

Answer 7

outwards-moving force

Question 8

helicordial flow

Answer 8

the cork-screw like motion that occurs in a meander