Is Felsic Lava Thick Or Thin?

Can a drop of lava kill you?

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.

Fortunately in both instances the lava was not very deep and they were able to get out quickly..

Where is thick and sticky lava found?

Molten rock or magma gathers under the volcano until the pressure is so great that it is forced up through a vent towards the surface of the earth. The Soufrière Hills Volcano produces a thick sticky lava called andesite.

What makes Lava thick?

The cooler the lava, the higher the viscosity (the thicker it is). 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 type of magma is thick?

High viscosity magma is very thick and pasty. It usually has a large amount of dissolved gas . It usually erupts violently. Low Viscosity magma is thin and runny with little dissolved gas.

Is Lava wet or dry?

If we’re using it as an adjective (definition: covered or saturated with water or another liquid), then lava is a liquid state so it therefore it’s wet. But nothing touched by lava is left damp or moist, which means that you can’t really use wet as a verb to describe lava.

What are the 3 major types of magma?

There are three basic types of magma: basaltic, andesitic, and rhyolitic, each of which has a different mineral composition. All types of magma have a significant percentage of silicon dioxide. Basaltic magma is high in iron, magnesium, and calcium but low in potassium and sodium.

What causes magma to rise?

Magma can rise when pieces of Earth’s crust called tectonic plates slowly move away from each other. … Magma also rises when these tectonic plates move toward each other. When this happens, part of Earth’s crust can be forced deep into its interior. The high heat and pressure cause the crust to melt and rise as magma.

What type of lava has high viscosity?

Lavas with high viscosity are rhyolite, dacite, andesite and trachyte, with cooled basaltic lava also quite viscous; those with low viscosities are freshly erupted basalt, carbonatite and occasionally andesite.

What’s 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.

Which type of volcano has the most violent eruptions?

stratovolcanoesBecause they form in a system of underground conduits, stratovolcanoes may blow out the sides of the cone as well as the summit crater. Stratovolcanoes are considered the most violent.

What are the 3 types of lava flow?

The most common way to divide lava flows into distinct types is following: Pahoehoe lava flow, Aa lava flow, Blocky lava flow, and also Pillow lava flow.

Which magma type produces the most lava flows?

Rhyoliticglowing avalanches of volcanic rock fragments. Which magma type produces the most lava flows? Rhyolitic. Andesitic.

Is basaltic lava thick or thin?

They are relatively thin (1-2 m) and very fluid with low viscosities. They advance downslope in a sort of smooth “rolling motion.” The front of the flow usually advances as a thin (< 20 cm) glowing lobe that will chill and crust over after 1-2 meters of flow.

What is the hottest color of fire?

The inner core of the candle flame is light blue, with a temperature of around 1800 K (1500 °C). That is the hottest part of the flame. The color inside the flame becomes yellow, orange, and finally red. The further you get from the center of the flame, the lower the temperature will be.

What is hotter magma or lava?

When geologists refer to magma, they’re talking about molten rock that’s still trapped underground. If this molten rock makes it to the surface and keeps flowing like a liquid, it’s called lava. … They’re also the hottest variety of magma, reaching temperatures between 1,800 degrees to 2,200 degrees Fahrenheit.

Which volcanoes are more likely to explode the ones with thick lava or thin lava?

The lava that flows from both types of eruptions is very hot, thin, and runny which allows for fast flowing lava flows. The main difference lies in the fact that most Hawaiian eruptions have the greatest quantity of lava pouring out of the main vent at the volcano’s summit, not along side fissures.

What type of volcano has felsic lava?

stratovolcanoesThe lava flowing from stratovolcanoes typically cools and hardens before spreading far, due to high viscosity. The magma forming this lava is often felsic, having high-to-intermediate levels of silica (as in rhyolite, dacite, or andesite), with lesser amounts of less-viscous mafic magma.

What do you call hardened lava?

The sub-family of rocks that form from volcanic lava are called igneous volcanic rocks (to differentiate them from igneous rocks that form from magma below the surface, called igneous plutonic rocks). The lavas of different volcanoes, when cooled and hardened, differ much in their appearance and composition.