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What is the relationship between the silica content of magma and the explosiveness of a volcanic eruption is?
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How the composition of magma determines an eruption's characteristics?
Silica(te) rich magma is usually an explosive eruption. The explosiveness of an eruption depends on - a) Gases trapped within the magma at eruption b) The Silica content c) The fragility of the crater walls and/or the volcanic plug.
What two factors control the explosiveness of an eruption?
The explosiveness of an eruption is primarily controlled by the viscosity of the magma and the amount of gas trapped in it. Low viscosity magma with high gas content tends to lead to more explosive eruptions, while high viscosity magma with lower gas content leads to less explosive eruptions.
What two principal factors determine the nature or explosive potential of a volcanic eruption?
The two principal factors that can determine the nature or explosiveness of a volcanic eruption is Temperature and Composition in terms of its water content, mineralogy and volatility.
What determines if an eruption will be explosive or nonexplosive?
The weight of the volcano.
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.
What is the relationship between the silica content of magma and the explosiveness of a volcanic eruption is?
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What is the relationship between the silica contents of magma and the explosiveness of a volcanic eruption?
The high the silica content, the explosive and the eruption.
What are the two important factors that affect the explosiveness of a volcanic eruption?
Pressure and magma
How the composition of magma determines an eruption's characteristics?
Silica(te) rich magma is usually an explosive eruption. The explosiveness of an eruption depends on - a) Gases trapped within the magma at eruption b) The Silica content c) The fragility of the crater walls and/or the volcanic plug.
What two factors control the explosiveness of an eruption?
The explosiveness of an eruption is primarily controlled by the viscosity of the magma and the amount of gas trapped in it. Low viscosity magma with high gas content tends to lead to more explosive eruptions, while high viscosity magma with lower gas content leads to less explosive eruptions.
What two principal factors determine the nature or explosive potential of a volcanic eruption?
The two principal factors that can determine the nature or explosiveness of a volcanic eruption is Temperature and Composition in terms of its water content, mineralogy and volatility.
What determines if an eruption will be explosive or nonexplosive?
The weight of the volcano.
Why does a quiet volcanic eruption form lava sheets?
less gas dissolved in the ejected material therefore less ash ad explosiveness in the eruption. There still is an outpouring of matter though in the form of lava with less dissolved gas.
What substance determines if a volcano will have quiet or explosive eruption?
Silicon
Which factor does not help determine whethera volcanic eruption will be explosive or relatively quiet?
The chemical composition of the magma is a key factor that influences the explosiveness of a volcanic eruption, while the time of day does not play a role in determining eruption characteristics. Factors such as viscosity, gas content, and temperature of the magma are critical, as they affect how easily gases can escape. Therefore, the time of day is irrelevant to the nature of the eruption.
What was the Richter scale of the eruption in Monserrat in 1995?
The eruption in Montserrat in 1995 was a catastrophic event but it did not have a specific Richter scale measurement because the scale is typically used to measure earthquakes, not volcanic eruptions. Instead, volcanic eruptions are typically measured using the Volcanic Explosivity Index (VEI) which gives a sense of the eruption's intensity and explosiveness.
