A set of stairs wears down over time as many people step on them.
A rock in a river is broken down over time.
The process of sediment being moved
The wind carries grains of sand across the desert.
The process of sediment being dropped off
Pieces of rock slide down the side of a mountain
A tree root grows through a crack in sidewalk, causing the sidewalk to break
The process of Sediment being broken apart
After it rains, pieces of dirt and rock pile up at the bottom of a hill
Rocks and sediments pile up on a river bank.
