Freeze Thaw Action

Question 1

What are the steps of Freeze Thaw Action?

Answer 1

1. During the day, water seeps into cracks in the rock.
2. At night, temperatures fall below freezing point.
   The water in the cracks freezes and expands by 9 per cent, putting pressure on the rock.
3. This process continues over time, widening the cracks and joints in the rock, causing it to weaken, and eventually pieces break off. The broken-down rock is known as scree. Scree often builds up at the base of a slope