by size, shape and composition?
Answer:
Once pools and riffles have developed, the river flows from side-to-side in a winding course. A corkscrew-like flow of water called Helicoidal Flow moves material from the outside of one meander bend and deposits it on the inside of the next bend. Water moving faster has more energy to erode.
There are five factors of soil formation, these are:
1) Parent Material
2) Topography
3) Biota
4) Climate
5) Time
The parent material of soil is the material that soil develops from. It is where the soil acquires its inherent characteristics or attributes that will influence the direction, timing, and nature of soil as it develops over time.
Though Topography, Time, and Climate are factors of soil development, they are rendered unimportant when parent material is not present.
Mountains are created when two plates collide. When the plates converge or slide underneath each other the heat causes melting of the crust and volcanoes appear. When they cool off they become islands.