Which outcome is caused when lava encounters seawater?

💡 Explanation

Rapid cooling creates pillow lava because heat flux causes instantaneous phase change at the interface. This sudden solidification traps the molten material, forming rounded structures, rather than increased viscosity; therefore, the other options are less directly linked to initial contact.

• Which impact on communities occurs during lahar flows?
• Which risk prominently increases within active alluvial fans?
• Which mechanism causes increased stream discharge variability in regions transitioning from glacial to fluvial drainage patterns?
• When a volcanic eruption deposits a thick tephra layer on unstable slopes, which mass wasting mechanism amplifies debris flow hazards?
• Which outcome occurs when groundwater seeping into a limestone cave with localized high CO2 concentration encounters reduced atmospheric CO2 above?
• Which mechanism disrupts the Hadley cell circulation pattern during El Niño events?