Question

why do some volcanoes erupt violently​

Answer 1

Answer:

In volcanology, an explosive eruption is a volcanic eruption of the most violent type. ... Such eruptions result when sufficient gas has dissolved under pressure within a viscous magma such that expelled lava violently froths into volcanic ash when pressure is suddenly lowered at the vent.

Answer 2

Answer:

Effusive eruptions are more common when the

magma is less viscous, or runny, which allows gas to escape and the magma to flow down the

volcanoes slopes. Explosive eruptions, however, happen when viscous molten rock traps the

gasses, building pressure until it violently breaks

free.

OR OR OR OR OR OR u can also write this

Some volcanic eruptions are explosive and

others are not. The explosivity of an eruption

depends on the composition of the magma. If

magma is thin and runny, gases can escape

easily from it. When this type of magma erupts, it

flows out of the volcano.