Question

1. which factor most significantly affects frost wedging?

wind velocity
freeze - thaw cycles
chemical composition
rock color

Explanation:

Frost wedging is a physical weathering process where water freezes and expands in rock crevices. Freeze - thaw cycles are crucial as each cycle allows water to enter deeper into the rock and cause more expansion and cracking. Wind velocity, chemical composition, and rock color do not directly impact the process of frost wedging as significantly as the number of times water freezes and thaws.

Answer:

Freeze - thaw cycles