Answer :

hcpsmathews
The grand canyon experienced a great amound of mechanical weathering over the years.

Definition: Mechanical weathering is also known as physical weathering. It's when wind and natural weathering is used.
Erudite1
Weathering is the process by which rock particles are broken down into small pieces. There are three basic types of weathering, these are physical, chemical and biological weathering. Another name for physical weathering is mechanical weathering. Mechanical weathering refers to the breaking down of rock particles as a result of mechanical forces and actions of wind, water, temperature fluctuations, etc.