Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← GeographyWhich volcanic outcome occurs when felsic magma cools rapidly?
A)Pyroclastic flow generation increases greatly✓
B)Shield volcano formation preferentially occurs
C)Basaltic column formation readily expands
D)Lava viscosity reliably remains constant
💡 Explanation
Pyroclastic flows are generated by explosive eruptions; therefore, because rapid cooling increases magma viscosity and volatile content, a phreatomagmatic explosion becomes far more probably rather than a lava flow and reduced volcanic activity.
🏆 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 limits thermohaline circulation if Arctic ice melt significantly increases freshwater input?
- Which mechanism triggers coastal upwelling occurrences due to the Coriolis effect?
- Which outcome primarily occurs when excessive groundwater extraction lowers the water table beneath natural levees?
- Which outcome occurs when rapid snowmelt increases river discharge past the original design height of levees?
- Which mechanism explains elevated mercury levels in soils near strike-slip faults?
- Which risk increases when earthquake-induced liquefaction weakens ground infrastructure on a coastal slope?
