They become smooth and oval shaped, because the rushing water erodes the rock fragment/s.
Rocks in a stream become smooth through a process called abrasion, where the sediments carried by the water wear down the rocks over time. This continuous rubbing and grinding against each other in the stream smoothens the surface of the rocks.
Sediment and small rocks are carried down in the river and are deposited.
The sediment size carried by the stream increases. EW
A load is the term for particles carried by a stream or river.
Sediment that is carried by a stream along the bottom of its channel.
It will eventually be ground down into a round rock, then gravel, and finally sand.
Little sediments are carried by the eroding stream
load or stream load.
load
Solid particles in a stream can include sediment, rocks, sand, gravel, and organic material like leaves or sticks. These particles are carried along by the flow of water and can vary in size and composition depending on the stream's location and characteristics.
Discarge
A stream can bounce large pebbles and boulders, along the stream bed. These rocks are called bed load. A stream can carry sand in suspension. These materials, called suspended load, make the river look muddy. The dissolved load is material carried in a solution, which means that the material is dissolved in the water. Sodium and calcium are some of the materials in the dissolved load.