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What factors determine if a volcanic eruption will be quite or explosive?
The two main factors are the viscosity and the gas content of the magma. explosive eruptions usually occur when magma approaches the surface and dissolved gasses bubble out so rapidly that it escapes explosively, creating clouds of ash and pumice. If there isn't enough gas this can't happen. High viscosity magma by definition does not flow easily. This allows pressure to build inside or under a volcano as the magma moves slowly. The higher viscosity also means the magma can hold more gas.
What are the two factors control the explosiveness of a volcano?
The viscosity of the magma and its gas content.
What two things drive out magma?
pressure and temperature
What are some physical properties of magma from an explosive eruption?
Magma is a liquid form of rock beneath the surface of the planet. It has two properties, physical and chemical, you can notice if it is not the physical property of magma if it has the chemical properties of whatever it contains.
What determines whether a volcano will erupt violently or quietly?
if a volcano is high in silica, it will be explosive. If its low in silica, it will be quiet. Two important things that determine whether an eruption will be explosive or quiet: # The amount of water vapor and other gases that are trapped in the magma. # If the magma is basaltic or grantic.
What two things cause the viscosity of magma?
Silica and pressure
What 3 factors determine magma viscosity?
The three elements that determine viscosity in magma are:TemperatureSilicaOxides (gases)Viscosity changes the way in which magma will flow. Magma with low viscosity will flow much more easily than high viscosity magma.
What factors determine if a volcanic eruption will be quite or explosive?
The two main factors are the viscosity and the gas content of the magma. explosive eruptions usually occur when magma approaches the surface and dissolved gasses bubble out so rapidly that it escapes explosively, creating clouds of ash and pumice. If there isn't enough gas this can't happen. High viscosity magma by definition does not flow easily. This allows pressure to build inside or under a volcano as the magma moves slowly. The higher viscosity also means the magma can hold more gas.
What are the two factors control the explosiveness of a volcano?
The viscosity of the magma and its gas content.
What factors affect magma's viscosity?
The two main factors that affect viscosity are temperature and silica content. Higher temperatures lower viscosity while higher silica content increases viscosity.
What two things does the appearance of a volcano depend on?
One factor that influences a volcanic eruption is the composition of the lava; the thicker the lava, the more explosive the eruption. Another factor is the level of pressure that forces magma up a pipe or vent; the higher the pressure, the more violent the eruption.
What two things drive out magma?
pressure and temperature
What are two things that have a higher viscosity than water?
1. Molasses 2. Honey Both have higher viscosity than water.
What are some physical properties of magma from an explosive eruption?
Magma is a liquid form of rock beneath the surface of the planet. It has two properties, physical and chemical, you can notice if it is not the physical property of magma if it has the chemical properties of whatever it contains.
What are two things that determine the color of a light wave?
the two things that determine the color of a light wave are its wavelength and the material it reflects from.
What determines whether a volcano will erupt violently or quietly?
if a volcano is high in silica, it will be explosive. If its low in silica, it will be quiet. Two important things that determine whether an eruption will be explosive or quiet: # The amount of water vapor and other gases that are trapped in the magma. # If the magma is basaltic or grantic.
Why does a non explosive eruption occur when basaltic magma is present?
The explosive potential of a volcano is determined by two primary factors:Gas within the magmaViscosity of the magmaThe combination of the gas and the viscosity determine the explosive potential of the magma as a result of the ability for the magma to flow as well as if it can release the dissolved gasses in a passive manner.Volcanoes that have a high concentration of Silica in their magma traditionally have a tendency to erupt more explosively. In the case of basalt, although there is traditionally a high level of dissolved gasses within the magma, basalt can easily flow. The ability for basalt to easily flow allows for the passive release of the gasses that are dissolved in the magma resulting in a non-explosive eruption as the gasses are released over time as the magma reaches the surface and not catastrophically as the magma escapes.
