What Are The Three Factors That Influence Viscosity Of A Lava??
The three factors that influence the viscosity of a lava are temperature the dissolved gases it contains and its chemical composition.
What 3 factors influence the viscosity of lava?
Temperature composition and volatile (gas) content largely determine the viscosity of lava.
What are the main factors that affect viscosity?
Viscosity is resistance to flow. For liquids typically the larger the intermolecular forces (IMF) the higher the viscosity. The other factors that affect viscosity are temperature and the shape of the molecule.
What are the 3 factors that influence how a volcano erupts?
What are the 4 factors that affect viscosity?
…
Factors Affecting Viscosity:
- Temperature: …
- Chemical Composition: …
- Colloid Systems: …
- Suspended Material:
What is the viscosity of a lava?
Thus basaltic magmas tend to be fairly fluid (low viscosity) but their viscosity is still 10 000 to 100 0000 times more viscous than water. Rhyolitic magmas tend to have even higher viscosity ranging between 1 million and 100 million times more viscous than water.
What does lava viscosity depend on?
Viscosity of Magmas
Viscosity is the resistance to flow (opposite of fluidity). Viscosity depends on primarily on the composition of the magma and temperature. Higher SiO2 (silica) content magmas have higher viscosity than lower SiO2 content magmas (viscosity increases with increasing SiO2 concentration in the magma).
What are the three factors that determine viscosity?
The three factors that influence the viscosity of a lava are temperature the dissolved gases it contains and its chemical composition.
What is viscosity and what factors control it?
Define viscosity: a measure of a material’s resistance to flow (Higher viscosity materials flow with great difficulty) What are three factors affecting viscosity? Temperature Composition Dissolved Gases.
What causes a viscosity increase of liquids?
Both cohesion and molecular interchange contribute to liquid viscosity. The impact of increasing the temperature of a liquid is to reduce the cohesive forces while simultaneously increasing the rate of molecular interchange. The former effect causes a decrease in the shear stress while the latter causes it to increase.
What are the three components of lava?
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Chemistry:
| Element (Symbol) | Weight percent |
|---|---|
| Oxygen (O) | 46.6 |
| Sodium (Na) | 2.8 |
| Potassium (K) | 2.6 |
| Magnesium (Mg) | 2.1 |
What factors affect the viscosity of magma?
A magma’s viscosity is largely controlled by its temperature composition and gas content (see downloadable programs at the bottom of this page). The effect of temperature on viscosity is intuitive. Like most liquids the higher the temperature the more fluid a substance becomes thus lowering its viscosity.
What two principal factors affect the viscosity of magma lava?
The viscosity of magma depends upon its silica content and temperature.
What are the factor s affecting viscosity of a substance?
How does molecular shape affect viscosity?
Viscosity is governed by the strength of intermolecular forces and especially by the shapes of the molecules of a liquid. Liquids whose molecules are polar or can form hydrogen bonds are usually more viscous than similar nonpolar substances.
What are the types of viscosity?
- Dynamic (absolute) viscosity – the measurement of the fluid’s internal resistance to flow when force is applied.
- Kinematic viscosity – refers to the ratio of dynamic viscosity to density or a measurement of the viscosity of a fluid in motion.
How viscosity affects the movement of magma?
Heating reduces viscosity (warm syrup flows more easily than cold.) High viscosity lavas flow slowly and typically cover small areas. In contrast low viscosity magmas flow more rapidly and form lava flows that cover thousands of square kilometers.
How does the viscosity of a lava affect the steepness of a volcano slope?
These volcanoes produce sticky higher viscosity magma (andesite and rhyolite) that does not travel very far. When layered between ash this magma will pile up into much steeper sided conical shaped volcanoes – much like you would imagine a volcano to look like.
What are the factors that contribute to magma formation?
- Temperature plays a role in the formation of the melts in the magma. …
- Pressure can affect the shape and formation of melts.
What are the three major types of magma?
How does viscosity of lava affect the shape of a volcano?
And the lava viscosity defines the size and shape of a volcano. Even though lava is 100 000 times more viscous than water it can still flow great distances. When lava has low viscosity it can flow very easily over long distances. … It can also clog up the volcanic vent and form blocks that resist the flow of lava.
What are three properties of magma list and define each one?
What are the factors on which viscosity of the liquid depends?
The viscosity of a liquid usually depends on its temperature. Viscosity generally decreases as the temperature increases. Viscosity generally increases as the temperature decreases. The viscosity of a liquid is related to the ease with which the molecules can move with respect to one another.
What is the cause of viscosity in a fluid How does the flow of fluid depend on viscosity?
The viscosity of liquids decreases rapidly with an increase in temperature and the viscosity of gases increases with an increase in temperature. Thus upon heating liquids flow more easily whereas gases flow more sluggishly. … Kinematic viscosity is the absolute viscosity of a fluid divided by its mass density.
How does viscosity affect the flow of liquid?
Viscosity is the measure of resistance of a fluid to flow. A fluid that is highly viscous has a high resistance (like having more friction) and flows slower than a low-viscosity fluid. To think of viscosity in everyday terms the easier a fluid moves the lower the viscosity.
What causes viscosity in gases?
Physical causes
Viscosity in gases arises from molecules traversing layers of flow and transferring momentum between layers. … Since the momentum transfer is caused by free motion of gas molecules between collisions increasing thermal agitation of the molecules results in a larger viscosity.
What creates lava?
Lava forms when magma erupts from a volcano. As pressure is released gases dissolved in the magma bubble out so the composition of lava changes. Most lava flows are formed by the eruption of hot (around 1200oC) basalt magma (see video clip above).
What elements are in Hawaiian lava?
The high fluidity (low viscosity) of Hawaiian lavas derives mainly from its basaltic composition characterized by more iron (Fe) magnesium (Mg) calcium (Ca) and titanium (Ti) and less silicon (Si) aluminum (Al) sodium (Na) and potassium (K) compared to such viscous lavas as the dacite erupted explosively at …
What happens if you touch lava?
Lava won’t kill you if it briefly touches you. You would get a nasty burn but unless you fell in and couldn’t get out you wouldn’t die. With prolonged contact the amount of lava “coverage” and the length of time it was in contact with your skin would be important factors in how severe your injuries would be!
What are the 3 types of volcanoes describe the differences between each type?
What two principal factors affect the viscosity of magma lava which is more viscous basaltic or granitic magma Why?
Magma that produce basaltic rocks contain about 50% silica whereas granitic magma contain more than 70% silica. … It follows therefore that the loss of gases renders magma or lava more viscous.
Which of the following does not affect the viscosity of magma?
Question: Which of the following does not affect the viscosity of magma? Temperature Silica Content Amount of gas None of these affects the viscosity of the magma.
Which of the following increases the viscosity of magma?
The viscosity of magma increases with: high % silica and cooler temperatures.
Which factor s are important to the viscosity of these aqueous polymer solutions?
Polymer viscosity is affected by a number of factors such as the salinity temperature concentration molecular weight and shear rate. Polymer viscosity is affected by water salinity and divalent ions such as calcium (Ca2+) and magnesium (Mg2+) which decrease the viscosity of the polymer solution.
Magma Viscosity Gas Content & Milkshakes
Factors Affecting Volcanoes’ Eruptive Styles
Factors Affecting Volcanic Eruption and Volcanic Shapes and their Material Emissions
Viscosity of Magma