the mechanical weathering process in which water in the cracks of rocks freezes and expands, widening the cracks
ice wedging
the movement of wet soil down a slope
Earthflow
the breaking down of rocks by physical processes
mechanical weathering
the rapid downhill movement of a large amount of rock and soil
Landslide
the process in which carbon dioxide from the atmosphere or soil dissolves in water to form carbonic acid
carbonation
the wearing down of rock surfaces by other rocks or sand particles
abrasion
the breaking down of a substance by chemical reaction with water
hydrolysis
a narrow ditch cut in the Earth by runoff
Gully
the surface features of a place or region
topography
an accumulated deposit of till
moraine