What causes the difference between quiet eruptions and violent eruptions?

Answer 1

During a quiet eruption lava flows from vents, setting fire to, and then burying, everything in its path.

During an explosive eruption, a volcano can belch out hot clouds of deadly gases as well as ash, cinders, and bombs

Answer 2

The difference between quiet and violent eruptions is primarily due to the composition of the magma and the presence of gas. Quiet eruptions, such as Hawaii's shield volcanoes, typically have low viscosity magma with low gas content, resulting in gentle flows. Violent eruptions, like those of stratovolcanoes, have high viscosity magma with high gas content, causing pressure build-up and explosive eruptive events.

Answer 3

an explosive eruption hurls out pyroclastic material

a quiet eruption just has small lava flows

Answer 4

They both most commonly occur at or near to the boundaries of tectonic plates.

They both also have the potential to cause significant damage.

Answer 5

Quiet erruptions mean the lava lets gas bubbles escape easily causing an overflow of lava. Explosive eruptions mean gas bubbles are traped inside the magma causing lots of tephra and smoke.

Answer 6

you can't just put a question mark at the end of a statement and turn it into a question

Answer 7

the gases and liquid that forms into a composite vollcano.

Answer 8

An effusive eruption is gentler and less deadly than an explosive eruption.

Answer 9

it depends on the pressure of the volcano.

Answer 10

they both have silica