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Which characteristic of magma mainly determines its explosiveness?
The explosiveness of magma is primarily determined by its viscosity, which is influenced by its chemical composition, particularly the silica content. High-silica magma tends to be more viscous, trapping gas bubbles and increasing pressure until explosive eruptions occur. In contrast, low-silica magma is less viscous, allowing gases to escape more easily and resulting in less explosive eruptions. Thus, viscosity plays a crucial role in the behavior of volcanic eruptions.
What determines the severity of volcanic eruptions?
The size of the magma chamber and the viscosity of the magma.
What effects does silica content have on the characteristic of magma?
Silica is something in the magma, so it is a pretty important part of magma because it pretty much a part that makes magma!
What is magma mainly consisting of?
Magma is mainly consisting of molten rock, which is a mixture of solid minerals, gases, and liquid rock. The composition of magma can vary depending on factors such as depth, temperature, and the geological setting.
What determines the explosiveness of an eruption?
viscosity of magma build up of gases
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 determines the severity of volcanic eruptions?
The size of the magma chamber and the viscosity of the magma.
Which is characteristic of the magma that formed the Hawaiian islands?
magma that is low in silica and flows easily
What mineral determines magma viscosity?
A magma's viscosity is directly related to its degree of silica content.
What determines the size of a minerals crystals?
The rate at which magma cools determines the size of the mineral crystal.
Which is not a characteristic of magma from an explosive eruption?
flows easily
What effects does silica content have on the characteristic of magma?
Silica is something in the magma, so it is a pretty important part of magma because it pretty much a part that makes magma!
What is magma mainly consisting of?
Magma is mainly consisting of molten rock, which is a mixture of solid minerals, gases, and liquid rock. The composition of magma can vary depending on factors such as depth, temperature, and the geological setting.
What determines the explosiveness of an eruption?
viscosity of magma build up of gases
What determines the magnetism of rocks formed from cooling magma?
The composition of the magma and the local magnetic flux as it crossed the Curie point.
What determines the size of a mineral crystal formed from magma?
The cooling rate of the magma primarily determines the size of a mineral crystal. Faster cooling rates lead to smaller crystals, while slower cooling rates result in larger crystals. Other factors such as the mineral composition and level of nucleation can also influence crystal size.
