When is basal sliding in a glacier more effective?
Answer and explanation
Correct answer: When pressure melting creates water at the base and increases sliding
Basal sliding becomes more effective when a thin film or network of meltwater develops beneath temperate glacier ice. Pressure melting, frictional heat, geothermal heat, and surface meltwater can contribute to this water; it reduces friction between the ice and bedrock, allowing the ice to move faster and potentially intensifying abrasion. Therefore A is correct, while B, C, and D describe unrelated coastal, karst, and aeolian processes.
Frequently asked questions
What is the correct answer to this question?
When pressure melting creates water at the base and increases sliding
Why is this the correct answer?
Basal sliding becomes more effective when a thin film or network of meltwater develops beneath temperate glacier ice. Pressure melting, frictional heat, geothermal heat, and surface meltwater can contribute to this water; it reduces friction between the ice and bedrock, allowing the ice to move faster and potentially intensifying abrasion. Therefore A is correct, while B, C, and D describe unrelated coastal, karst, and aeolian processes.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting. Topic: Covers GAAP.
