Erosion
Erosion is typicality the movement of rock and mineral grains one place to the other. sediment off of rock that's break down or been worn away.
Mechanical Weathering
Mechanical Weathering is the physical break-up or breaking of rocks. A example is, gravity makes rocks to fall down a cliff and break apart. Rocks that rolled down a slop when moving the rock rubs against the other rock, making the slope smoother or rounder.
Temperature change can cause Mechanical Weathering. During the start of spring, or during warm winters, the temperature will still drop below freezing then get warm again this is called freeze-thaw period. Each night, it freezes and pushes the rock pieces farther apart. Then finally the rocks break apart. If the rock has to many cracks it will crumble at the end of the freeze thaw period. This is a process of frost wedging (picture on the left). If materials are under water like crystals salts, can fall apart as easy.
Temperature change can cause Mechanical Weathering. During the start of spring, or during warm winters, the temperature will still drop below freezing then get warm again this is called freeze-thaw period. Each night, it freezes and pushes the rock pieces farther apart. Then finally the rocks break apart. If the rock has to many cracks it will crumble at the end of the freeze thaw period. This is a process of frost wedging (picture on the left). If materials are under water like crystals salts, can fall apart as easy.