Which outcome results when low volatile magma's viscosity reaches a threshold?

💡 Explanation

Extensive lava flows are created by lower volatile magma because at a threshold viscosity the increased internal friction reduces potential for fragmentation causing gradual emissions rather than a violent eruption; therefore flows occur rather than pyroclastic surges if there's less volatile content.

• Which risk increases where a large, locked fault experiences episodic tremor and slip (ETS)?
• Which outcome occurs when geothermal plant injection increases?
• Which mechanism establishes desert biomes due to atmospheric cells?
• Which ecosystem change results when sequential pyroclastic flows deposit stratified materials atop one another?
• Which climatic shift occurs when weakened trade winds disrupt equatorial ocean currents during strong El Niño events?
• Which outcome occurs when upper tropospheric winds accelerate due to temperature differences across Hadley cell boundaries?