Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← GeographyOn exposed playa surfaces, which effect primarily increases when fine sediment cohesion weakens?
A)Accelerated deflation rates✓
B)Increased chemical weathering levels
C)Expanded alluvial fan deposits
D)Reduced saltation threshold velocity
💡 Explanation
Increased fine sediment availability promotes accelerated deflation rates, because weakened cohesion allows wind to entrain more particles. This causes increased winnowing of material from the surface, therefore boosting overall deflation, rather than other geomorphic processes or threshold reductions.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Geography →- Which process drives deep mantle upwelling due to subduction?
- Which consequence results when pyroclastic surge mobilizes tephra downstream?
- Which mechanism causes land subsidence when groundwater is extracted from aquifers near a fault line?
- Which mechanism drives the thermohaline circulation of ocean water when surface water cools significantly in polar regions?
- Which sediment outcome occurs when wind speed fluctuates frequently?
- Which effect on polar rivers results from increasing near-shore permafrost thaw?
