Which volcanic consequence increases when silica content increases?

💡 Explanation

Increased silica leads to higher magma viscosity, and therefore traps gas more effectively; this increases explosivity because vesicle nucleation allows for greater volatile expansion, rather than efficient outgassing.

• Which long-term outcome is suppressed when human infrastructure impedes sediment transport along a coastline with barrier islands?
• Which mechanism dominates the change in morphology as a proglacial lake fills with sediment?
• Which outcome occurs when intense weathering produces abundant sediment upslope from a confined valley exit onto a plain?
• Which phenomenon significantly alters coastal stream flow direction during tidal shifts?
• Which horizon change occurs when intense rainfall enhances leaching?
• Which outcome is accelerated across exposed playa when subjected to extreme aridity?