Answer:Mechanical weathering, also known as physical weathering or physical disintegration, is the process of breaking down rocks and minerals through physical or mechanical means. This can include processes such as abrasion, where particles are worn away from the surface of a rock due to friction from other particles, or frost wedging, where water expanding within cracks in the rock causes it to break apart. Other examples of mechanical weathering include salt crystal growth, thermal stress, and pressure release.