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If there is a high silica content in the magma, the eruption is usually more violent and explosive. Magma with a high silica content flows slower so pressure can build up and eventually erupt.
Wiki User
∙ 12y ago
Wiki User
∙ 13y ago"Thick" and "thin" are kind of vague terms.
If you a referring to granatic and basaltic magma - granatic meaning silica-rich and high in water vapor, basaltic meaning lacking in both - then here's your answer:
"Thick" magma is explosive magma found in cinder cone or composite volcanoes. It is part of loud, explosive eruptions. This is because of the silica content as well as the amount of water vapor trapped inside the magma. The more of each, the more gas is trapped; thus making more violent explosions.
"Thin" magma is quiet and watery, found in shield volcanoes. In comparison to "thick" magma, it is low in silica and doesn't have as much water vapor trapped, thus less gas pressure, thus less violent explosions.
The less silica in magma, the "thinner" it gets.
:)
I hope this answers your question!
Wiki User
∙ 10y agoCompared with most liquids you will encoutner, magma is quites viscous. Even the runnier magmas have something of a molasses-like consistency. The most viscous magma barely flow at all except under great pressure.
Wiki User
∙ 15y agoMagma's "thickness" is measured in terms of viscosity.
Wiki User
∙ 11y agothe amount ofquartzin lava changes the viscosity.Just like flour in pancake batter the more quarts youhavethe thicker it is.
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∙ 13y agoIt contains silica to make it thicker.
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∙ 12y agoHeat & Pressure
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∙ 14y agosycila
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What are the layers of the earth with there meanings?
Crust- the most outer layer, and the thinnest. Is where all the life lives. Is made up of many plates. Mantle- Hot, thick layer of molten rock- magma. Outer Core- the outer part of the core. Not quite solid, but thicker than magma. Inner Core- is so dense that, despite extreme temperature, extreme pressure makes it completely solid.
Can magma gases effect water?
yes and no. water effects the magma. a lot of water will make magma harden faster. but a little water makes the magma speed up/move faster. magma gases don't really effect water, its really the volcanic ash and toxic fumes that effect the water. (volcanic mudslides also effect water)
What makes the Atmosphere thicker?
pollution can destroy the atmosphere so adding more hydrogen and helium adding balloons can help for this matter
What happens to magma that rises though cracks on the seafloor?
It makes a volcano because as it rises it pushes up the sea floor and it rises.
What process occurs when a more dense plate sinks beneath a less dense plate?
SubductionThe Magma Forms And Makes A Volcano
What effect does silica content have on the magma?
Silica content makes the magma thicker which can cause a more explosive eruption, and also make it so more gases aer open to be trapped
Is it true that the more sycila magma contains the thicker the magma is?
no, it's silica
Does silica make magma thicker?
yes is does
What do both silica and water do to magma?
Silica is silicon dioxide. Is is perhaps the most common compound on earth. In magma the amount of silica is key in determining the viscosity. More silica leads to a more viscous magma.
Why is silica rich magma explosive?
This is because silica-rich magma is thicker. The thicker the magma, the chance for the dissolved gas in there to escape is less likely. This causes an explosion. When the gases do escape, they cause an even bigger explosion
How does silica affect the shape of a volcano?
A high silica content of the magma will form tall, steep-sided, or cone-shaped mountains. A low silica content produces shield shaped or broad volcanoes.
Does the increase in silica increase the viscosity of a magma?
it is normally intermediate flow because of the silica content.
Magma is hot liquid rock that makes what power possible?
magma is hot liquid rock that makes what power possible?
What is thicker salt or sugar?
"Thicker" is not an adjective that makes sense in this context.
What makes magma explode?
The gasses dissolved in the magma (or the entry of water into the magma) cause the explosive behaviour.
What are thickeners?
Substances that makes food thicker.
What makes a beard grow thicker?
Nothing.
