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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.
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.
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.
Factors helps determine whether a volcanic eruption will be violent or relatively quiet?
· It is determined by the primary factors of the magma's Temperature, its Composition, and the amount of Dissolved Gases it contains.
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 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.
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.
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.
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 factors help determine whether a volcanic eruption will be violent or quiet?
· It is determined by the primary factors of the magma's Temperature, its Composition, and the amount of Dissolved Gases it contains.
Factors helps determine whether a volcanic eruption will be violent or relatively quiet?
· It is determined by the primary factors of the magma's Temperature, its Composition, and the amount of Dissolved Gases it contains.
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.
What is the relationship between the amount of gases in magma and the explosiveness a volcanic eruption?
The more gases, water vapor and silica there is in magma the bigger the explosiveness of a volcanic eruption.
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.
