Answer:
When water in a river or stream moves quickly, it can lift up rocks from the bottom of that body of water. When the rocks drop back down they bump into other rocks, and tiny pieces of the rocks can break apart. Many rock surfaces have small crevices on them.
TYPES:
Abrasion: Abrasion is the process by which clasts are broken through direct collisions with other clasts.…
Frost Wedging:…
Biological Activity/Root Wedging:…
Salt Crystal Growth:…
Sheeting:…
Thermal Expansion:…
Works Cited.
EXAMPLES:
These examples illustrate physical weathering: Swiftly moving water. Rapidly moving water can lift, for short periods of time, rocks from the stream bottom. When these rocks drop, they collide with other rocks, breaking tiny pieces off. Ice wedging. Ice wedging causes many rocks to break. This refers to the repeated freezing and melting of water within small crevices in the rock surface.