Question detail
What is attrition in the context of river erosion?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Section C: Physical landscapes in the UK
Question
- A. The process of rocks breaking down due to chemical reactions
- B. The wearing away of rocks as they collide with each other
- C. The movement of sediment downstream
- D. The force of water dislodging material from banks
Answer
The correct answer is The wearing away of rocks as they collide with each other.
Explanation
The correct option is The wearing away of rocks as they collide with each other. The wearing away of rocks as they collide with each other is correct because it directly matches the approved learning objective to explain fluvial erosion processes including hydraulic action, abrasion, attrition, solution, vertical erosion and lateral erosion. This belongs to River landscapes in the UK (optional route) within Section C: Physical landscapes in the UK, so the answer must stay focused on the geographical process, evidence, place, or impact named by the curriculum. The other options are weaker because they move away from River landscapes in the UK (optional route), reverse the geographical relationship, or make a broader claim than the objective supports.
Common mistake
Misunderstanding Erosion Processes
Students often confuse hydraulic action with abrasion, thinking they are the same process.
Clarify that hydraulic action involves the force of water impacting the riverbanks, while abrasion is the wearing away of the banks and bed by sediment carried by the water.
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