The document organizes information about volcanic eruptions into different types: effusive, explosive, Hawaiian, Strombolian, Vulcanian, Surtseyan, and Plinian. Hawaiian eruptions emit fluid basalt lava jets from vents or fissures that can travel miles as flows. Strombolian eruptions burst lava from summit conduits in irregular explosions producing spatter, scoria, lava bombs, ash, and flows. Plinian eruptions are the largest and most violent, caused by gassy magma fragmentation, with ash drifting very long distances in extremely destructive eruptions often followed by climatic inactivity.