Question

7 which weathering process involves the constant freezing and thawing of water?
exfoliation
frost wedging
spheroidal weathering
unloading

Explanation:

To solve this, we analyze each option:

• Exfoliation: Involves rock layers peeling due to pressure release, not freezing/thawing.
• Frost wedging: Occurs when water in rock cracks freezes (expands) and thaws (contracts), breaking the rock. This matches the constant freezing and thawing of water.
• Spheroidal weathering: Results from chemical weathering affecting rock corners/edges, not freezing/thawing.
• Unloading: Related to pressure release causing rock expansion, not freezing/thawing.

Answer:

B. frost wedging