What may result when a notch forms at the base of a coastal stack?
Answer and explanation
Correct answer: The stack is undercut and may become a stump
A coastal stack is an isolated pillar left after waves enlarge a cave, arch and eventually remove the arch roof. Continued hydraulic action and abrasion at the base can form a notch, weakening the pillar. Once support is reduced, collapse or further marine erosion may lower the stack to a stump. Option B describes this sequence; the other choices are unrelated or opposite to the process.
Frequently asked questions
What is the correct answer to this question?
The stack is undercut and may become a stump
Why is this the correct answer?
A coastal stack is an isolated pillar left after waves enlarge a cave, arch and eventually remove the arch roof. Continued hydraulic action and abrasion at the base can form a notch, weakening the pillar. Once support is reduced, collapse or further marine erosion may lower the stack to a stump. Option B describes this sequence; the other choices are unrelated or opposite to the process.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
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