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Why is magma that contains little silica less to erupt explosively?
Magma with less silica is thinner and runnier.Therfore, gases can move out of the magma easily.
What volcano forms from lava that contains relatively small amounts of gases and silica?
A volcano that forms from lava containing relatively small amounts of gases and silica is typically a shield volcano. These volcanoes have broad, gently sloping sides and are primarily built up by the flow of low-viscosity basaltic lava, which can travel long distances. The low gas content allows for less explosive eruptions, resulting in relatively calm lava flows. Examples include Mauna Loa and Kilauea in Hawaii.
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.
Why does high silica magma tend to form volcanic domes with steep sides?
because the volcano's vent gets plugged, gases cannot escape and pressure build up.
Where do the gases and lava come from a volcano?
Gases in a volcano come from the magma underneath it, which contains dissolved gases like water vapor, carbon dioxide, and sulfur dioxide. When pressure builds up in the magma chamber, gases are released along with lava during an eruption. Lava is molten rock that comes from deep within the Earth's mantle and is pushed up through the volcano's vent during an eruption.
Why do you say that a volcano erupt violently?
It actually depends on the amount of silica and other gases trapped in the magma.
Why is magma that contains little silica less to erupt explosively?
Magma with less silica is thinner and runnier.Therfore, gases can move out of the magma easily.
What volcano forms from lava that contains relatively small amounts of gases and silica?
A volcano that forms from lava containing relatively small amounts of gases and silica is typically a shield volcano. These volcanoes have broad, gently sloping sides and are primarily built up by the flow of low-viscosity basaltic lava, which can travel long distances. The low gas content allows for less explosive eruptions, resulting in relatively calm lava flows. Examples include Mauna Loa and Kilauea in Hawaii.
Why is magma that contains little silica less likely erupt explosively?
Magma with less silica is thinner and runnier.Therfore, gases can move out of the magma easily.
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.
Why does high silica magma tend to form volcanic domes with steep sides?
because the volcano's vent gets plugged, gases cannot escape and pressure build up.
Where do the gases and lava come from a volcano?
Gases in a volcano come from the magma underneath it, which contains dissolved gases like water vapor, carbon dioxide, and sulfur dioxide. When pressure builds up in the magma chamber, gases are released along with lava during an eruption. Lava is molten rock that comes from deep within the Earth's mantle and is pushed up through the volcano's vent during an eruption.
Why is the amount of Silica in magma important?
The amount of silica in magma determines its viscosity or flowability. Magma with high silica content is more viscous and tends to trap gases, leading to explosive eruptions. Low-silica magma has lower viscosity and allows gas to escape more easily, resulting in less explosive eruptions.
Do gases escape from a low silica magma easier than it does a high silica magma?
yes
What two ingredients in magma affects the type of explosion and shape of a volcano?
water and mantle rock +++ More specifically, the silica proportion, plus water and gases from entrained wet, organic-rich sediment if the volcano is from subduction rather than a constructive plate margin. Increasing silica increases the magma's viscosity; the water and gas make it effervesce in the eruption.
How does silica affect the shape of a volcano?
High silica content in magma can lead to explosive eruptions and the formation of steep-sided volcanoes, such as stratovolcanoes. This is because high silica magma is thicker and more viscous, which traps gases and builds up pressure before erupting violently. The high viscosity of silicic magma prevents it from easily flowing, resulting in the steep shape of the volcano.
Name two non poisonous gases volcanoes release?
There is no gases that comes out of a volcano that is not poisonous all gases that comes from a volcano is dangerous.
