Rocks move because of gravity.
Erosion.
Rocks stop moving and make sand dunes.
Deposition.
People climb and move rocks.
Erosion.
Rocks break.
Weathering.
Rocks stop moving.
Deposition.
Water like an ocean wave breaks rocks.
Weathering.
Wind moves rocks and dirt.
Erosion.
Rain or snow break rocks.
Weathering.
Ice breaks rocks.
Weathering.