Question

About volcanoes and it's types of eruptions.

Answer 1

Volcanic Eruptions

The most common type of volcanic eruption occurs when magma (the term for lava when it is below the Earth's surface) is released from a volcanic vent. Eruptions can be effusive, where lava flows like a thick, sticky liquid, or explosive, where fragmented lava explodes out of a vent. In explosive eruptions, the fragmented rock may be accompanied by ash and gases; in effusive eruptions, degassing is common but ash is usually not.

Volcanologists classify eruptions into several different types. Some are named for particular volcanoes where the type of eruption is common; others concern the resulting shape of the eruptive products or the place where the eruptions occur. Here are some of the most common types of eruptions:

What Determines Eruption Type:

--The crystal and gas content and temperature of a magma help determine a volcano's eruption style. 

-- Crystals in magma make it more viscous, so magma with a high crystal content is more likely to explode than flow. 

-- Gases create explosions if they cannot easily escape from viscous magma, but they can also be released without explosions (or with only minor ones) from fluid magma. 

-- High-temperature magmas usually erupt effusively, while low-temperature magmas cannot flow easily and are more likely to erupt explosively.

Answer 2

volcanoes are of three three types one is active which always erupts and one is dormant volcanoes which may erupts and may not and the last one is doesn't erupts