How does hydraulic action work in river or wave erosion?
Answer and explanation
Correct answer: Breaking rock by forcing air and water into cracks under pressure
Hydraulic action is erosion caused directly by the force and pressure of moving water. River water or waves enter joints and cracks in a cliff or bedrock; repeated pressure, compression of trapped air, and the impact of water weaken the rock until pieces break away. This is different from abrasion, which uses transported particles as tools. Calcite deposition, dust lifting, and glacial sorting are unrelated, so option D is correct.
Frequently asked questions
What is the correct answer to this question?
Breaking rock by forcing air and water into cracks under pressure
Why is this the correct answer?
Hydraulic action is erosion caused directly by the force and pressure of moving water. River water or waves enter joints and cracks in a cliff or bedrock; repeated pressure, compression of trapped air, and the impact of water weaken the rock until pieces break away. This is different from abrasion, which uses transported particles as tools. Calcite deposition, dust lifting, and glacial sorting are unrelated, so option D is correct.
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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