Which outcome occurs when felsic lava flows on land?

💡 Explanation

An explosive eruption occurs because felsic lava has high viscosity and gas content leading to rapid pressure buildup; fragmentation is the eruptive mechanism. This forms pyroclastic flows, rather than low-viscosity lava flows, therefore a gentle eruption does not result.

• Which outcome in a karst landscape results when acidic groundwater dissolves subsurface limestone, and overlying clay sediment lacks internal cohesion?
• Which ocean ecosystem consequence results when seasonal equatorial upwelling diminishes?
• Which change of prevailing wind direction results from the combined Coriolis effect and decreasing pressure gradient force?
• After heavy rainfall, which risk increases as dissolution widens limestone fissures?
• Which outcome accelerates karst development in coastal regions?
• Which outcome occurs when a hurricane breaches a barrier island?