What can hydraulic action and abrasion by sea waves together form?
Answer and explanation
Correct answer: Sea cave and cliff notch
The governing concept is marine erosion at a weak line in a rocky coast. Hydraulic action forces water and compressed air into cracks, increasing pressure and widening the joint; abrasion then uses sand, pebbles, and other debris to scrape and scour the weakened rock. Together these processes can enlarge a crack into a sea cave and cut a notch at the cliff base. Thus B is correct. The other groups are glacial or karst landforms.
Frequently asked questions
What is the correct answer to this question?
Sea cave and cliff notch
Why is this the correct answer?
The governing concept is marine erosion at a weak line in a rocky coast. Hydraulic action forces water and compressed air into cracks, increasing pressure and widening the joint; abrasion then uses sand, pebbles, and other debris to scrape and scour the weakened rock. Together these processes can enlarge a crack into a sea cave and cut a notch at the cliff base. Thus B is correct. The other groups are glacial or karst landforms.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Recording of Transactions (I & II).
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