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The most abundant gas typically released into the atmosphere from volcanic systems is water vapor (H2O), followed by carbon dioxide (CO2) and sulfur dioxide (SO2). Volcanoes also release smaller amounts of others gases, including hydrogen sulfide (H2S), hydrogen (H2), carbon monoxide (CO), hydrogen chloride (HCL), hydrogen fluoride (HF), and helium (He).
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When magma reaches the surface what happens to the gases?
When magma reaches the surface, the gases dissolved in the magma are released due to the decrease in pressure. This release of gases can lead to explosive volcanic eruptions as the gases expand rapidly and forcefully.
What happens when Magma with a large amount of dissolved gases tends to be?
When magma with a large amount of dissolved gases reaches the Earth's surface, the gases expand rapidly, causing pressure to build up. This can lead to explosive volcanic eruptions as the built-up pressure is released violently, ejecting magma, gases, and volcanic ash into the air.
Can dissolved gases comprise up to a few percent by weight of magma?
No, dissolved gases typically comprise only a small fraction of a percent by weight of magma. The most common dissolved gases in magma are water vapor, carbon dioxide, and sulfur dioxide. In some cases, the gas content can increase just before an eruption, leading to explosive volcanic activity.
What happens to the dissolved gases in magma as the magma ascends towards the surface of earth?
As magma rises, the gases contained within expand due to the decrease in pressure on them as they rise. This creates bubbles that float through the magma, Like the sudden decrease in pressure on the gas in a carbonated beverage when opening, it's container releases a mass of rising bubbles.
What is the most abundant dissolved gas in magma?
The most common dissolved gas in magma is water vapor, or H2O. Other important gases that may be present in magma and released during volcanic eruptions are carbon dioxide, sulfur dioxide, and hydrogen sulfide.
When magma reaches the surface what happens to the gases?
When magma reaches the surface, the gases dissolved in the magma are released due to the decrease in pressure. This release of gases can lead to explosive volcanic eruptions as the gases expand rapidly and forcefully.
What happens when Magma with a large amount of dissolved gases tends to be?
When magma with a large amount of dissolved gases reaches the Earth's surface, the gases expand rapidly, causing pressure to build up. This can lead to explosive volcanic eruptions as the built-up pressure is released violently, ejecting magma, gases, and volcanic ash into the air.
Can dissolved gases comprise up to a few percent by weight of magma?
No, dissolved gases typically comprise only a small fraction of a percent by weight of magma. The most common dissolved gases in magma are water vapor, carbon dioxide, and sulfur dioxide. In some cases, the gas content can increase just before an eruption, leading to explosive volcanic activity.
What determines the viscosity of magama?
temperature, silica content, and the amount of dissolved gases determine the viscosity of magma. For instance, if the magma is cold, has a high amount of silica and has lots of dissolved gases in it the viscosity will be very high.
What happens to the dissolved gases in magma as the magma ascends towards the surface of earth?
As magma rises, the gases contained within expand due to the decrease in pressure on them as they rise. This creates bubbles that float through the magma, Like the sudden decrease in pressure on the gas in a carbonated beverage when opening, it's container releases a mass of rising bubbles.
What is the most abundant dissolved gas in magma?
The most common dissolved gas in magma is water vapor, or H2O. Other important gases that may be present in magma and released during volcanic eruptions are carbon dioxide, sulfur dioxide, and hydrogen sulfide.
Which factors determine how violent an eruption will be?
· It is determined by the primary factors of the magma's Temperature, its Composition, and the amount of Dissolved Gases it contains.
Does high viscosity and dissolved gases increase volcano explosions?
Yes.High viscosity magmas are thick whereas lower viscosity ones are thin and runny. Therefore higher the viscosity or the resistant to flow property , more violent will be the explosions. As the magma rises up the mantle the confining pressure reduces which results in the release of potential dissolved gases from the melt.More the dissolved gases more violent will be the explosion.
True or False Dissolved minerals trapped in magma under tremendous pressure provide the force for a volcanic eruption?
True. The dissolved minerals trapped in magma create gases that are released under pressure, causing the magma to rise and eventually leading to a volcanic eruption.
What causes the gases in magma to expand?
When magma is underground it is under enormous pressure, which causes the gasses to dissolve in the magma. As the magma rises pressure decreases and the gasses come out of solution. All gasses expand when decompressed.
What mass of molten rock formed at depth including dissolved gases and crystals?
It is magma, which becomes lava on erupting from a vent or volcano.
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
