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What kind of eruptions and speed of flow do high silica and low silica magmas have when they erupt as lava?
Wiki User
∙ 9y ago
For eruptions it is explosive and for speed of flow it is 6 miles per hour. When the eruption as lava is 18 miles per hour.
Wiki User
∙ 9y ago
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What is the importance of a silica and oxygen in lava flow speed?
Silica will determine if the lava is hot and runny or thick and slow!
Does higher magma viscosity lead to more violent eruotions?
Typically, yes. Larger volcanoes such as shield volcanoes erupt more frequently than smaller ones. However, the speed of eruption depends on the type of volcano and lava. If the volcano is an acid-lava volcano or a composite volcano, the eruption may be slow and noisy and the acidic lava is viscous, which means it flows slowly, and that it solidifies up the vent and block the lava from flowing out easily, creating a huge "BANG" during eruptions.
What is the maths behind volcanoes?
speed of volcano eruption=depth of volcano/time taken to erupt
What affects the speed of lava flows?
The temperature and the silica content will both affect the viscosity of lave which will in turn affect the flow rate (whereby the lower the temperature and the higher the silica content, the higher the viscosity and the lower the flow rate).
What three things indicate the thickness of magma?
The thickness of magma may be indicated by its measured temperature, its color, and the speed of its flow.
What amount of ash would cover Seattle if Mount Rainier erupted?
That depends on the size of the eruption and the wind speed and direction. In all likely hood, though, Seattle would not see much ashfall, as the prevailing winds would tend to carry the ash eastward, away from the city.
What are the reasons of Erosion and deposits in steam turbine?
The steam. Steam passing through a turbine spinning at a speed of 3600rpm will have a tip velocity on it largest wheel of about 1800 feet per second. In order to reach that speed the steam must be moving at least that fast through the blades. that is about 1200 miles per hour, or more than 1 1/2 times the speed of sound. The steam also over time picks up impurities from the steam pipe to the turbine, these will cause erosion similar to sand blasting. The water in the boiler has impurities that can't be removed effectively, one is silica. At high temperature in the boiler the silica vaporizes into the steam passages, as it passes through the turbine the steam cools and the silica solidifies again into deposits on the turbine blades. There are other causes but these are the most common.
What is the speed of moving lava?
Lava can reach supersonic speeds in some highly explosive volcanic eruptions. Lava speed is mostly dependent on the lava's viscosity, whether it's runny or sticky. Most runny lava flows are probably less than 10 miles per hour. The more viscous, the slower the flow, depending on slope and other conditions.
If the speed of light in a vacuum is 1.2 times that of the speed of light in a given material what is the index of refraction for that material?
2 (no units)
Why would the crystals in an intrusive igneous rock be larger than the crystals in a chemical sedimentary rock?
Think about this: When molten rock cools slowly, bigger crystals are created.Then think about this: Intrusive rocks cool quite slowly because they are created in the earth's crust.So... Intrusive igneous rocks have bigger crystals. Molten magma in the earth's crust cools slowly making rocks like granite with big crystals.Get it? got it?GOOD!!
Why are there black pellets in artificial turf?
The materials is rubber granule, there is another layer of silica sand under the rubber granule. Rubber granule is used in football fields and rugby pitches to provide a softer surface. Silica Sand is used in short pile artificial turf systems such as field hockey and tennis court to provide a more responsive surface. The infill materials stabilise the artificial grass fibers in an upright position. Fibers must be upright in a football field to slow down the ball speed and resemble the performance characteristics of a natural grass field.
Identify thre ahzards of volcanic eruptions?
A volcanic eruption is a beautiful and terrifying phenomenon. The key hazards are the gasses which can cause suffocation, earthquakes, ash deposition, and pyroclastic flows. A pyroclastic flow is the cascading of quantities of often superheated ash, rock, mud, and other material from the sides of a volcano itself at great speed and force.
