On which rocks is glacial quarrying or plucking more effective?
Answer and explanation
Correct answer: Jointed and weakened bedrock
The governing concept is glacial plucking, also called quarrying. Meltwater enters joints and fractures in bedrock, then freezes or exerts pressure within them. This weakens and loosens blocks, allowing the moving glacier to grip and remove them. Therefore jointed, weakened bedrock is most favourable and option C is correct. Smooth jointless rock offers fewer weaknesses, while sand and dry loess are not typical quarrying targets.
Frequently asked questions
What is the correct answer to this question?
Jointed and weakened bedrock
Why is this the correct answer?
The governing concept is glacial plucking, also called quarrying. Meltwater enters joints and fractures in bedrock, then freezes or exerts pressure within them. This weakens and loosens blocks, allowing the moving glacier to grip and remove them. Therefore jointed, weakened bedrock is most favourable and option C is correct. Smooth jointless rock offers fewer weaknesses, while sand and dry loess are not typical quarrying targets.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
