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When certain types of volcanoes erupt, their lava is so full of gas that when it reaches the surface it froths and explodes.
The explosions hurl the pulverised (now cooled and solidified) magma high up into the atmosphere.
The pulverised rock is so fine it is called "volcanic ash" and this forms a cloud above the volcano that then drifts off with the wind. This is a volcanic ash cloud.
See image of a cloud in the related link below.
Wiki User
∙ 10y ago
Wiki User
∙ 11y agoThe ash is composted of small fragments of volcanic glass. It forms when gasses bubble out of rising magma explosively. The magma is turned into tiny pieces as it exits the volcano, rapidly becoming solid. They solidify too quickly for any sort of crystal structure to develop.
Wiki User
∙ 10y agomakes no sense
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How do ash cloud volcanoes form?
ash clouds are formed when the clouds are near volcanoes the magma spouts in the air.
Do volcanoes produce large amounts of ash when they erupt?
Volcanoes with high levels of water in their lava produce ash, those with dry lava produce no ash.
How are volcanoes developed?
Volcanoes are created by layers of ash and lava eruptions
What are shield volcanoes known for?
Ash production.
What is it called when ash and cinders are blown violently out of volcanoes?
when volcanic ash bursts out of the volcano, its called an eruption.^^^Actually, when ash and cinders are blown violently out of volcanoes, it's called a tephra. :3
How do ash cloud volcanoes form?
ash clouds are formed when the clouds are near volcanoes the magma spouts in the air.
What are ash clouds emitted from?
Ash clouds are emitted from volcanoes.
Do composite volcanoes blow out smoke and ash or lava?
ash
Four landforms created from lava and ash?
Three landforms that can be created from ash are cinder cone volcanoes, composite volcanoes, and shield volcanoes. Lava plateaus can also be formed.
Do volcanoes produce large amounts of ash when they erupt?
Volcanoes with high levels of water in their lava produce ash, those with dry lava produce no ash.
Do all volcanoes erupt with ash?
no
How are volcanoes developed?
Volcanoes are created by layers of ash and lava eruptions
Shield volcanoes are known for their?
Ash production
What are shield volcanoes known for?
Ash production.
Why do volcanoes effect planes?
After volcanoes erupt, a huge cloud of ash rises above it. This ash cloud causes problems for aeroplanes in mid flight.
Do volcanoes erupt just lava?
No. Volcanoes also release ash and a variety of gasses.
Name three things that can come out of volcanoes?
Volcanoes can produce lava, ash, and gas.
