What primary factors determine the nature of volcanic eruption?
The primary factors that determine the nature of volcanic eruptions include the magma's temperature its composition and the amount of dissolved gases it contains. As lava cools it begins to congeal and as viscosity increases its mobility decreases. The viscosity of magma is directly related to its silica content.
What primary factors determine the nature of volcanic eruptions How do these factors affect a magma’s viscosity?
What are the two primary factors that determine how magma erupts? The viscosity and gas content of a magma determines how it erupts. Low viscosity and low gas content generally lead to quiescent eruptions.
What factors determine the type of volcano?
When magma erupts at the surface as lava, it can form different types of volcano depending on:
- the viscosity, or stickiness, of the magma.
- the amount of gas in the magma.
- the composition of the magma.
- the way in which the magma reached the surface.
What three factors determine the nature of a volcanic eruption What role does each play?
An eruption, explosive or otherwise, depends on three, fundamental factors: the nature of the magma, the depth of the magma chamber below the surface, and the excess pressure built up in the magma chamber (compared to what the pressure would be if an unobstructed column of magma extended to the surface).
What are the two primary factors that determine the manner in which magma erupts quizlet?
The two primary factors that determine how magma erupts is its viscosity and gas content.
What factors affect an eruption?
The style of eruption depends on a number of factors, including the magma chemistry and content, temperature, viscosity (how runny the magma is), volume and how much water and gas is in it, the presence of groundwater, and the plumbing of the volcano.
What are the two primary factors that determine how magma erupts quizlet?
The two primary factors that determine how magma erupts is its viscosity and gas content.
What is the main factor that controls how explosive a volcanic eruption will be?
The amount of dissolved gas in the magma provides the driving force for explosive eruptions. The viscosity of the magma, however, is also an important factor in determining whether an eruption will be explosive or nonexplosive.
What three factors determine a volcanic eruption?
There are three main factors that influence the violence of a volcanic eruption: 1. magma viscosity 2. magma temperature and 3. amount of dissolved gases.
What factors affect an eruption quizlet?
What factors determine the type of volcanic eruption? The type of volcanic eruption is determined by the magma composition, magma temperature, and amount of dissolved gases.
What are the two primary factors that determine the manner in which magma erupts?
The two primary factors that determine how magma erupts is its viscosity and gas content.
Which of the following factors help determine whether a volcanic eruption will be violent or relatively quiet?
The amount of water vapor and other gases present is one factor that determines whether a volcanic eruption will be quiet or explosive.
What are the two primary factors that determine the manner in which magma erupts view available hint S?
The two primary factors that determine how magma erupts is its viscosity and gas content.
Which of the following factors help determine whether a volcanic eruption will be violent or relatively quiescent?
Which of the following factors help determine whether a volcanic eruption will be violent or relatively quiescent? It is determined by the primary factors of the magma's Temperature, its Composition, and the amount of Dissolved Gases it contains. The viscosities of magmas increase with increasing percentages of silica.
What are the 3 main factors that affect volcanic eruptions?
Although there are several factors triggering a volcanic eruption, three predominate: the buoyancy of the magma, the pressure from the exsolved gases in the magma and the injection of a new batch of magma into an already filled magma chamber.
What are the 3 factors that influence how a volcano erupts quizlet?
What primary factors determine whether a volcano erupts violently or quietly? Magma composition, magma temperature and the amount of dissolved gases in the magma.
What are the primary factors that determine whether a volcano erupts explosively or quietly?
The primary factors that determine whether a volcano erupts violently or quietly include magma composition magma tempera- ture and the amount of dissolved gases in the magma.
What causes a explosive eruption?
Explosive eruptions occur where cooler, more viscous magmas (such as andesite) reach the surface. Dissolved gases cannot escape as easily, so pressure may build up until gas explosions blast rock and lava fragments into the air! Lava flows are much more thick and sticky so do not flow downhill as easily.
What are the two primary factors that determine how magma erupts?
The two primary factors that determine how magma erupts is its viscosity and gas content.
What causes volcanic eruptions?
The melted rock, or magma, is lighter than the surrounding rock and rises up. This magma collects in magma chambers, but it is still miles below the surface. When enough magma builds up in the magma chamber, it forces its way up to the surface and erupts, often causing volcanic eruptions.
Which of the following is a major factor in determining whether a volcanic eruption will be violent explosive or relatively quiescent effusive )?
Volcanic eruptions can be explosive, sending ash, gas and lava high up into the atmosphere, or the magma can form lava flows, known as effusive eruptions. Whether an eruption is explosive or effusive largely depends upon the amount of gas in the magma.
What factors determine whether a volcanic eruption will be quiet or explosive?
The viscosity, temperature and composition of the magma determine whether the explosion is explosive or effusive. Silica: Influences lava viscosity and overall shape of the volcano. Silica molecules form a strong bond that permits entrapment of volcanic gases and promotes explosive volcanic eruptions.
What are the 4 factors affecting volcanic eruption?
The style of eruption depends on a number of factors, including the magma chemistry and content, temperature, viscosity (how runny the magma is), volume and how much water and gas is in it, the presence of groundwater, and the plumbing of the volcano.
What are 3 characteristics that determine how violently a volcano erupts?
How can we tell when a volcano will erupt?
- An increase in the frequency and intensity of felt earthquakes.
- Noticeable steaming or fumarolic activity and new or enlarged areas of hot ground.
- Subtle swelling of the ground surface.
- Small changes in heat flow.
- Changes in the composition or relative abundances of fumarolic gases.
What are 2 important factors that affect the explosiveness of a volcanic eruption?
A volcano's explosiveness depends on the composition of the magma (molten rock) and how readily gas can escape from it. As magma rises and pressure is released, gas bubbles (mainly of water vapor and carbon dioxide) form and expand rapidly, causing explosions.
What are the 4 types of volcanic eruptions?
There are four types of eruptions with properties determined mostly by the silica content of magma, and the amount of gas it contains. In order of increasing explosiveness, these are Hawai'ian, Strombolian, Vulcanian, and Plinian eruptions.
What causes a volcanic eruption Wikipedia?
A volcanic eruption occurs when hot materials from the Earth's interior are thrown out of a volcano. Lava, rocks, dust, and gas compounds are some of these "ejecta".
What are the causes and effects of volcanic eruption?
Volcanoes spew hot, dangerous gases, ash, lava, and rock that are powerfully destructive. People have died from volcanic blasts. Volcanic eruptions can result in additional threats to health, such as floods, mudslides, power outages, drinking water contamination, and wildfires.
What are two main factors that determine how explosive a volcanic eruption is?
CONTROLS ON EXPLOSIVITY The amount of dissolved gas in the magma provides the driving force for explosive eruptions. The viscosity of the magma, however, is also an important factor in determining whether an eruption will be explosive or nonexplosive.
Which of the following factors helps determine whether a volcanic eruption will be violent or relatively quiescent?
Which of the following factors help determine whether a volcanic eruption will be violent or relatively quiescent? It is determined by the primary factors of the magma's Temperature, its Composition, and the amount of Dissolved Gases it contains. The viscosities of magmas increase with increasing percentages of silica.