- Is basaltic magma viscous?
- What are 4 types of lava?
- Can lava melt metal?
- Is there more lava or water on Earth?
- Which lava has the highest viscosity?
- Can lava kill you?
- How far can lava flows go?
- Is andesitic lava viscous?
- Is felsic lava viscous?
- Can you outrun a volcano?
- Why do some volcanoes erupt violently while others erupt quietly?
- Is basaltic lava thick or thin?
- What type of lava is most viscous?
- What’s hotter fire or lava?
- Which type of lava is the most dangerous?
Is basaltic magma viscous?
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 are 4 types of lava?
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. Sometimes Turbulent lava flow is also added, but the latter is only of theoretical interest to scientist because we will not see that type of lava flow in the nature.
Can lava melt metal?
Liquid lava temperature is not very high, and won’t melt a chunk of steel for example. Consider this – your normal large firewood burns at 600-800 degrees, which is just a little bit less than liquid lava temperature. You can melt lead, aluminium and maybe copper in this (with due insulation), but that’s about it.
Is there more lava or water on Earth?
The question is a little tricky because magma in the Earth’s mantle is a very thick liquid, but it completely dwarfs the amount of water on the surface. The earth has 1.386×10 18 m 3 of water.
Which lava has the highest viscosity?
rhyoliticThe magma that has the highest viscosity is rhyolitic magma.
Can 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. … People have been killed by very fast moving lava flows. A recent example was the 1977 eruption at Nyiragongo.
How far can lava flows go?
Viscous andesite flows move only a few kilometers per hour (couple feet per second) and rarely extend more than 8 km (5 mi) from their vents. Viscous dacite and rhyolite flows often form steep-sided mounds called lava domes over an erupting vent.
Is andesitic lava viscous?
Alternating andesitic lava flows and layers of explosively ejected pyroclastics. Magma is intermediate, making the lava viscous and difficult to erupt. Explosive eruptions due to buildup of gases.
Is felsic lava viscous?
Felsic lavas are not as hot, high in silica and volatiles, and have a high viscosity. They are thick and gooey and resist flowing. Their high volatile content makes them potentially highly explosive.
Can you outrun a volcano?
Volcanic eruptions are dangerous, potentially cataclysmic events that you should never realistically expect to outrun. But you could potentially escape. According to a study on an ancient super-eruption—which produced hazardous expulsions of material—the flows typically traveled 10 mph to 45 mph for 100 miles.
Why do some volcanoes erupt violently while others erupt quietly?
The two main factors that influence how a volcano will erupt are viscosity and gas content. … The magma is very sticky and resists the expansion of the gas bubbles. Ultimately, enough bubbles grow and expand to blow the magma into ash size fragments and eject them violently into the atmosphere.
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 type of lava is most viscous?
This flows quickly out of a volcano at a temperature of about 950 degrees Celsius. This flows out for great distances creating shield volcanoes or flood basalt fields. An example of high viscosity lava is felsic lava, like rhyolite or dacite. It erupts at lower temperatures, and can flow for tens of kilometers.
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 lava is the most dangerous?
Composite volcanoes are some of the most dangerous volcanoes on the planet. They tend to occur along oceanic-to-oceanic or oceanic-to-continental boundaries because of subduction zones. They tend to be made of felsic to intermediate rock and the viscosity of the lava means that eruptions tend to be explosive.