Lower temperature magmas have higher viscosity than higher temperature magmas (viscosity decreases with increasing temperature of the magma).
How does temperature affect lava viscosity?
MAGMA VISCOSITY, TEMPERATURE, AND GAS CONTENT. … Like most liquids, the higher the temperature, the more fluid a substance becomes, thus lowering its viscosity. Composition plays an even greater role in determining a magma’s viscosity.
How does temperature affect magma?
The higher the temperature, the more rock melts and the less viscous the magma is. It should be noted that there are a variety of rocks in the Earth’s mantle and they melt at different temperatures. If the temperature is lower, only some rocks (generally the ones with more silicon content) will melt.
Why is the viscosity of a magma lower at higher temperatures?
Viscosity of magma, the resistance to flow depends on composition of the magma and temperature. Higher silica content means higher viscosity. … Hence, lower viscosity and low gas content mean higher temperature of magma.
What are three main factors affecting the viscosity of magma?
The three factors that influence the viscosity of a lava are temperature, the dissolved gases it contains, and its chemical composition.
Is magma or lava hotter?
Magma is hotter than lava, depending on how recently the lava reached the surface and if the magma and lava are from the same magma chamber below the…
What is the effect of increased pressure on rock melting?
Pressure: Pressure increases with depth, but increased pressure raises the melting temperature, so melting is less likely to occur at higher pressures. Water: The addition of water changes the melting point of rock. As the amount of water increases, the melting point decreases.
What are the factors that affects the viscosity of magma?
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 type of volcano has low viscosity?
Where a volcano produces low viscosity, runny lava, it spreads far from the source and forms a volcano with gentle slopes: a shield volcano. Most shield volcanoes are formed from fluid, basaltic lava flows. Mauna Kea and Mauna Loa are shield volcanoes.
What 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.
What is the relationship between viscosity and temperature?
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.
What are the factors affecting climate?
What are the 3 types of magma?
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. There are three basic types of magma: basaltic, andesitic, and rhyolitic, each of which has a different mineral composition.
Which is hotter fire or lava?
While lava can be as hot as 2200 F, some flames can be much hotter, such as 3600 F or more, while a candle flame can be as low as 1800 F. Lava is hotter than a typical wood or coal-buring fire, but some flames, such as that of an acetylene torch, is hotter than lava.
What is hottest thing in the universe?
The dead star at the center of the Red Spider Nebula has a surface temperature of 250,000 degrees F, which is 25 times the temperature of the Sun’s surface. This white dwarf may, indeed, be the hottest object in the universe.
What’s the hottest thing on Earth?
The hottest thing that we know of (and have seen) is actually a lot closer than you might think. It’s right here on Earth at the Large Hadron Collider (LHC). When they smash gold particles together, for a split second, the temperature reaches 7.2 trillion degrees Fahrenheit. That’s hotter than a supernova explosion.