Question

Why does water frozen in the cracks of a rock help to break down the rock? a) Water expands when frozen and chemically forces the rock apart. b) Water expands when frozen and physically forces the rock apart. c) Water contracts when frozen and chemically forces the rock apart. d) Water contracts when frozen and physically forces the rock apart.

Answer 1

Answer: B. water frozen in the cracks of a rock help to break down the rock because water expands when frozen, and physically forces the rock apart