What shapes a ventifact?
Answer and explanation
Correct answer: Abrasion of rock by wind-blown sand grains
A ventifact is a stone that has been polished, faceted, or grooved by abrasion from wind-driven sand and dust. Sand grains strike the exposed face repeatedly, removing tiny particles and gradually changing the rock’s shape; different exposed faces may record changing wind directions. Option A is therefore correct. Glacial deposits, river distributaries, and cave calcite are unrelated processes and do not produce a wind-shaped rock.
Frequently asked questions
What is the correct answer to this question?
Abrasion of rock by wind-blown sand grains
Why is this the correct answer?
A ventifact is a stone that has been polished, faceted, or grooved by abrasion from wind-driven sand and dust. Sand grains strike the exposed face repeatedly, removing tiny particles and gradually changing the rock’s shape; different exposed faces may record changing wind directions. Option A is therefore correct. Glacial deposits, river distributaries, and cave calcite are unrelated processes and do not produce a wind-shaped rock.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Trial Balance and Rectification of Errors.
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