Fluvial Processes & Landforms is one of 8 topics in the Grade 12 Geography CAPS syllabus, covered across 3 lessons on Study Vault. Below are real practice questions from this topic with full worked answers.
Sample practice questions
Easy
1. The erosion process where rock fragments carried by a river grind against its bed and banks, wearing them down, is called:
Abrasion
Hydraulic action
Attrition
Solution
Answer: Abrasion — Abrasion (or corrasion) is the grinding action of transported rock fragments against the river bed and banks, generally the most effective river erosion process.
Easy
2. Fine silt and clay particles carried within the body of flowing water, giving many rivers their muddy colour, are transported by which process?
Suspension
Traction
Saltation
Solution
Answer: Suspension — Suspension is the transport of fine silt and clay particles held within the flowing water itself, responsible for the brown, muddy colour of many rivers.
Medium
3. What is the name of the erosion process in which soluble minerals such as limestone are chemically dissolved by slightly acidic river water?
Answer: Solution — Solution (also called corrosion) is the chemical dissolving of soluble rock minerals, such as limestone, by slightly acidic river water.
