Erosion:

* Outer Bank (Cut Bank): The outside bend of a meander is where erosion is most intense. Here's why:

* Faster Water Velocity: Water flows faster on the outside of the bend due to the greater distance it has to travel.

* Centripetal Force: The water's inertia pushes it outward towards the outer bank, creating a stronger force that erodes the riverbank.

* Undercutting: The fast-moving water undercuts the outer bank, creating a steep slope and eventually leading to collapses.

Deposition:

* Inner Bank (Point Bar): The inside bend of a meander is where deposition occurs.

* Slower Water Velocity: The water slows down as it moves around the inside bend, reducing its ability to carry sediment.

* Centrifugal Force: The water's inertia tries to pull it straight, creating a force that pushes the water towards the inner bank.

* Sediment Drop-off: As the water slows, it loses energy and deposits the sediment it was carrying, building up a gently sloping point bar.

Visualizing it:

Imagine a river winding like a snake. The outside curves are where the river is carving its way outward (erosion). The inside curves are where the river is building up its banks (deposition).

Key Point: Over time, meanders become more pronounced due to the ongoing erosion and deposition processes. This leads to a wider bend and sometimes even the formation of oxbow lakes.