Anything in nature that is moving likes to keep going straight ahead at a constant speed. That is a paraphrase of Isaac newton's first law of motion. So when water flowing down a river comes to a turn, the water tries to keep going straight. The water eventually yields to the direction of the riverbed but not before doing some erosion to the river bank at the outer side of the turn. As the erosion continues over thousands of years, the river develops large, S-shaped meanders. A river's age can be roughly estimated by the quantity and size of its meanders.
Meander
The curves and bends that a river makes are called meanders. These meanders form as the river erodes the outer banks and deposits sediment on the inner banks, creating a winding path. Over time, meanders can shift and change due to the natural flow of water and sediment dynamics.
A river flowing across a wide floodplain that begins to form loop-like bends is experiencing a process known as meandering. This occurs as the water's velocity varies along the river's course, causing erosion on the outer banks and deposition on the inner banks, leading to the characteristic sinuous shape. Over time, these loops can become more pronounced, and in some cases, rivers may eventually cut off bends to form oxbow lakes. This dynamic process is influenced by factors such as sediment load, water flow, and the landscape's topography.
"bends"
Because waves ARE curved shapes!
The plural form of curve is curves.
The plural form of the singular noun stream is streams.The plural possessive form is streams'.
After a stream
steam
The plural form of the word "stream" is simply "streams."
The stream's catchment.
Stream Bank erosion is the wearing away of the banks of a stream or river. This is distinguished from erosion of the bed of the watercourse, which is referred to as scour. The roots of trees growing by a stream are undercut by such erosion. As the roots bind the soil tightly, they form abutments which jut out over the water. These have a significant effect upon the rate and progress of the erosion.