What Element Makes Lava Have High Viscosity??
What makes lava have a higher viscosity?
Composition: he more felsic the lava (the more silica in the lava) the higher the viscosity because silica forms chains in the cooling lava even before it crystallizes. The more mafic the lava (the less silica in it) the lower the viscosity.
Which lava composition would have the highest viscosity?
What increases the viscosity of magma?
The viscosity of magma increases with: high % silica and cooler temperatures. … Plutonic rocks are formed when magma cools deep in the crust without erupting. Magma that is very thick (viscous) is more likely to remain below the surface.
Does lava have high viscosity?
What type of volcano has the highest viscosity?
Lavas and pyroclastics are usually andesitic to rhyolitic in composition. Due to the higher viscosity of magmas erupted from these volcanoes they are usually more explosive than shield volcanoes. Stratovolcanoes sometimes have a crater at the summit that is formed by explosive ejection of material from a central vent.
What magma type is the most viscous?
| SiO2 | MAGMA TYPE | VISCOSITY |
|---|---|---|
| ~50% | mafic | low |
| ~60% | intermediate | intermediate |
| ~70% | felsic | high |
Which type of magma has the highest silica content and viscosity?
Felsic magma has the highest silica content of all magma types between 65-70%. Thick viscous felsic magma can trap gas bubbles in a volcano’s magma chamber.
What does the viscosity of magma determine?
The higher the amount of silica in the magma the higher is its viscosity. Viscosity is a liquid’s resistance to flow. Viscosity determines what the magma will do. … Dissolved gases become trapped by thick magma and the magma chamber begins to build pressure.
What elements has the highest amount in the magma?
Oxygen the most abundant element in magma comprises a little less than half the total followed by silicon at just over one-quarter. The remaining elements make up the other one-quarter. Magmas derived from crustal material are dominated by oxygen silicon aluminum sodium and potassium.
Does h2o increase magma viscosity?
When magmas migrate from their source up towards the Earth surface water exsolution can result in large (up to several orders of magnitude) increases in magma viscosity because of the strong effect of water on the viscosity of silicate melts (Leonteva 1940 Saucier 1952 Friedman et al.
What makes magma different from lava?
What type of volcano has felsic lava?
Composite volcanoes
Composite volcanoes are made of felsic to intermediate rock. The viscosity of the lava means that eruptions at these volcanoes are often explosive (figure 2).
What are the three factors that influence viscosity of a lava quizlet?
Three factors that affect magma viscosity are temperature composition and presence of dissolved gases.
What is magma composition?
Like solid rock magma is a mixture of minerals. It also contains small amounts of dissolved gases such as water vapor carbon dioxide and sulfur. The high temperatures and pressure under Earth’s crust keep magma in its fluid state.
What is high viscosity?
Most people think of “viscosity” in terms of a fluid’s ability to flow. … Fluids with low viscosity have a low resistance and shear easily and the molecules flow quickly high viscosity fluids move sluggishly and resist deformation.
What is the composition of lava?
Lava is mostly made of two elements — Si (the symbol for silicon) and O (the symbol for oxygen). Together they make a very strong bond and then get together with other elements like Fe (iron) Mg (magnesium) K (potassium) Ca (calcium) and more.
Which of the following factors makes a magma more viscous?
A liquid’s resistance to flow. SiO2 rich and cooler magmas are more viscous.
How the composition of magma affects its viscosity?
Magmas differ in composition which affects viscosity. Magma composition has a large effect on how a volcano erupts. Felsic lavas are more viscous and erupt explosively or do not erupt. Mafic lavas are less viscous and erupt effusively.
What is the viscosity of andesitic magma?
When magma has a high viscosity How is it most likely to erupt?
A high viscosity magma will flow more readily and easily than a low viscosity magma. Therefore the eruption will be fluid and passive. A high viscosity magma will flow more readily and easily than a low viscosity magma. Therefore the eruption will be explosive.
What magma contains the most silica?
What will happen to a volcano if its magma has high silica content?
Lava with high silica content is thick and viscous and does not readily flow. Lava rises up toward the surface but is too thick to squeeze through the cracks and fissures in the Earth. As lava continues to rise upward pressure continues to build.
Which magma composition contains the most silica SiO2 and therefore has the highest viscosity?
Granitic magma is thick and stiff and contains lots of silica and dissolved gasses. Granitic magma has the most silica and has the highest viscosity. 34) andesitic magma Andesetic magma has an intermediate amount of silica which gives it an intermediate viscosity in between basaltic and granitic magmas.
What two factors determine the viscosity of magma?
The viscosity of a magma is affected by its silica content and temperature. The amount of silica influences the magma’s viscosity in such a way that if the silica content is low the magma would have low viscosity whereas a high content of silica would make the magma more thick and sticky.
What are the two main factors that determine the viscosity of magma Brainly?
The three factors that influence the viscosity of a lava are temperature the dissolved gases it contains and its chemical composition.
How is magma formed?
Magma can also be created when hot liquid rock intrudes into Earth’s cold crust. As the liquid rock solidifies it loses its heat to the surrounding crust. Much like hot fudge being poured over cold ice cream this transfer of heat is able to melt the surrounding rock (the “ice cream”) into magma.
What are the top two composition of magma?
The composition of the gases in magma are: Mostly H2O (water vapor) & some CO2 (carbon dioxide) Minor amounts of Sulfur Chlorine and Fluorine gases.
What is magmatism and how magma is formed?
Magmatism is the emplacement of magma within and at the surface of the outer layers of a terrestrial planet which solidifies as igneous rocks. … On Earth magma forms by partial melting of silicate rocks either in the mantle continental or oceanic crust.
Which of the following elements has the highest amount?
Hydrogen is the most abundant element in the Universe helium is second. However after this the rank of abundance does not continue to correspond to the atomic number oxygen has abundance rank 3 but atomic number 8. All others are substantially less common.
Magma Viscosity Gas Content & Milkshakes
The Sci Guys: Science at Home – SE2 – EP7: Viscosity of Liquids