Question

What is stream abrasion?

Multiple choice question.
a) A stream getting wider over time due to erosion
b) The movement of the largest particles on the riverbed during times of high flow
c) Large grains collide with other grains in a stream and break them into smaller pieces

Answer 1

Stream abrasion refers to the mechanical weathering and erosion within a stream or river, breaking down particles and shaping the landscape.

Step-by-step explanation:

Stream abrasion is a geological process where sediments and other particles in a stream or river collide with each other and with the bed and banks of the water body. These collisions result in the mechanical breaking down of larger particles into smaller ones, contributing to the overall process of erosion.

This erosion shapes various geological features, such as river valleys and cliffs, and contributes to the formation of clastic sedimentary rocks by transporting and depositing different-sized sediments based on the current's speed.