There are four main types of mechanical weathering: frost wedging in which rocks are broken by water freezing within cracks, salt crystal growth in which rocks are broken by salt freezing within cracks, sheeting in which rocks dome upward and peel off, and biological activity in which living things such as tree roots break rocks apart.

there are five types of mechanical weathering which are:

Thermal expansion

Frost weathering

Exfoliation

Abrasion

Salt crystal growth

Explanation:

In thermal expansion, minerals normally expand and contract due to temperature fluctuations.

In abrasion and impact, rocks are broken up by friction and continuous with other rocks pieces during transportation.

In exfoliation, sheets of rocks peel away from the stripped rocks and disintegrate into smaller fractions along the fractures.

Frost weathering is the collective terms for various processes that involves ice.

Salt crystal growth, saline solution enters the cracks in the rocks and evaporate leaving salt crystals.