The River's Velocity, Gradient, and Channel shape/roughness
Stream erode their channels by abrasion, grinding, and by dissolving soluble material.
Sediment moves through a river by these three ways: bouncing, flying, and being suspended.
ocean sea and river
deflation and abrasion
Two main ways a river might change the land around it would be to erode the surrounding landscape (like how the Colorado river formed the grand canyon) and to fertilize the soil around it (like the Nile river).
because it cool
Abrasion and hydraulic action
abrasion and plucking
abrasion and impact
abrasion and impact
take a bag and put it in your sink
Corrasion, Hydraulic action, Attrition