frost leads to mechanical weathering
Answers
Answer:
Q.12 A contractor engages 54 workers to complete a job in
21 days. After working for 3 days, he found that he
would get the work completed in 28 days if he does
not increase the number of workers. How many more
workers should he engage to get the work done in time?
Answer:
During the day, when temperatures are warm, water trickles into cracks and pores within rocks. At night, when the temperature drops, the water freezes and expands. As this frost continues, the cracks within the rocks widen and eventually shatter portions of the rock.
Explanation:
If water seeps into cracks within rocks, it can freeze and expand. Frost shattering is a type of mechanical weathering where we see the breakdown of rock due to the expansion of ice. If that water contains salt, the salt crystals left behind in the cracks can expand when exposed to heat and cause additional weathering.