- What are the 3 types of magma?
- What is the consistency of magma?
- Where is runny lava found?
- Is Lava wet or dry?
- What is the difference between magma and lava?
- Which Magma has the highest viscosity?
- Which type of lava is runny?
- What makes Lava thicker?
- Which magma composition is most explosive?
- Is felsic magma explosive?
- What causes magma to rise?
- What type of magma flows the fastest?
- Is molten rock the same as magma?
- Which is hotter magma or lava?
- Can lava kill you?
- Which type of magma is the most fluid?
- Which factor does not affect how thick or thin magma is?
- Is lava hotter than fire?
What are the 3 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 is the consistency of magma?
This viscous liquid can range from the consistency of syrup to extremely stiff, with little or no flow apparent. This is regulated by the amount of silica in the lava, with higher levels of the mineral resulting in a higher viscosity. When lava eventually cools and solidifies it forms igneous rock.
Where is runny lava found?
Q2-4: Where is runny lava found: (a) On a continental plate, or (b) on an oceanic plate? Why? A2-4: This type of lava is found at mid-ocean ridges or hot spots because it is low in silica content.
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 is the difference between magma and lava?
Scientists use the term magma for molten rock that is underground and lava for molten rock that breaks through the Earth’s surface.
Which Magma has the highest viscosity?
rhyolitic magmaThe magma that has the highest viscosity is rhyolitic magma.
Which type of lava is runny?
If the lava is very hot and has a low viscosity (runny with a low gas and silica content) the lava flow is called Pahoehoe. If, on the other hand, the lava has a high viscosity (thick and pasty with a high gas and silica content) it is called Aa.
What makes Lava thicker?
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 magma composition is most explosive?
Explosive eruptions are favored by high gas content and high viscosity (andesitic to rhyolitic magmas).
Is felsic magma explosive?
Explosive Eruptions Felsic magmas erupt explosively because of hot, gas-rich magma churning within its chamber. The pressure becomes so great that the magma eventually breaks the seal and explodes, just like when a cork is released from a bottle of champagne.
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 magma flows the fastest?
basaltic lavaOn a flat slope, its basaltic lava moves no faster than 10 kilometers (6.2 miles) per hour. This is slightly faster than walking pace, but it’s a safe bet that you would be able to outrun it.
Is molten rock the same as magma?
Magma is composed of molten rock and is stored in the Earth’s crust. Lava is magma that reaches the surface of our planet through a volcano vent.
Which is hotter magma or lava?
Answer and Explanation: 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…
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. … Blong (1984) points out that little research has been done on injuries caused by lava. People have been killed by very fast moving lava flows.
Which type of magma is the most fluid?
Mafic magmaThis type of magma has a low gas content and low viscosity, or resistance to flow. Mafic magma also has high mean temperatures, between 1000o and 2000o Celsius (1832o and 3632o Fahrenheit), which contributes to its lower viscosity. Low viscosity means that mafic magma is the most fluid of magma types.
Which factor does not affect how thick or thin magma is?
The three things that determine how thick or thin magma is temperature, silica content, and gas content.
Is lava hotter than fire?
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.