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Which characteristic of magma mainly determines its explosiveness?
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What determines the explosiveness of an eruption?
viscosity of magma build up of gases
What is the content in magma directly affects a volcanoes explosiveness?
jacob
What is the relationship between the silica content of magma and the explosiveness of a volcanic eruption is?
we
What are the two factors control the explosiveness of a volcano?
The viscosity of the magma and its gas content.
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 determines the explosiveness of an eruption?
viscosity of magma build up of gases
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 content in magma directly affects a volcanoes explosiveness?
jacob
Does Andesitic magma have both an intermediate gas content and explosiveness?
yes.
What is the relationship between the silica content of magma and the explosiveness of a volcanic eruption is?
we
What are the two important factors that affect the explosiveness of a volcanic eruption?
Pressure and magma
What are the two factors control the explosiveness of a volcano?
The viscosity of the magma and its gas content.
What mainly determines the viscosity of a magma?
Viscosity is the measure of a liquids resistance to flow. In the case of magma, the hotter it is, the lower the viscosity.
What determines the type of mineral formed by cooling magma?
The rate of cooling of the magma determines the type of mineral formed by the magma or lava..
What does magma composition play a major role in?
The type of rock formed when the magma cools. The type of volcano or volcanic intrusion that is formed The explosiveness of volcanic eruptions.
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 determines the size of a mineral crystal formed from magma?
The rate at which magma cools determines the size of the mineral crystal.
