The factors that affect the viscosity of magma include temperature, crystal and rock fragments (composition), and the different dissolved gases.
What is magma?
It is a mixture of solid, volatile and liquid materials.
Characteristics of the viscosity of magma
- It is a mixture of chemical components that form high-temperature silicates.
- It includes substance in solid, liquid and gaseous state due to the temperature of the magma which is above the melting points of certain components.
- Volcanic eruptions often occur when the vapor pressure of the gases becomes greater than the pressure exerted by the solid rocks that keep the magma confined.
Therefore, we can conclude that the fluidity or viscosity of magma depends on its chemical composition and, in particular, the liquids and solids that the magma contains and the various gases dissolved in it.
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