Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← GeographyWhich mechanism contributes to cirque formation in high-alpine environments with seasonal freeze-thaw cycles?
A)Frost wedging causing rock fracturing✓
B)Dissolution of carbonate bedrock
C)Deposition of glacial till
D)Abrasion by wind-blown sediment
💡 Explanation
When water penetrates cracks undergoes repeated freeze-thaw, frost wedging occurs because water expands upon freezing, exerting pressure that fractures the surrounding rock and loosening debris. Therefore rock fracturing results, rather than dissolution, till deposition, or wind abrasion each necessitating different environmental conditions.
🏆 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 outcome results when the ocean's mixing layer weakens?
- Which risk markedly increases as transform fault blockages prevent fault creep?
- Which process primarily governs water salinity stratification within a fjord?
- Which mechanism distributes floating plastics throughout the North Pacific Gyre?
- Which mechanism causes alluvial fan formation commonly observed in arid intermontane basins?
- Which phenomenon causes the observed Coriolis effect on global weather patterns?
