- What are the 3 types of volcanoes?
- Which type of magma is most explosive?
- What is the biggest type of volcano?
- Which Magma has the highest viscosity?
- How much lava is in the earth?
- What are the four categories of magma?
- What makes magma explosive?
- What are two ways a primary magma can be generated?
- What type of magma has the lowest gas content?
- Which is the most dangerous volcano in the world?
- What’s the difference between magma and lava?
- How deep is magma in the earth?
- Which factor does not affect how thick or thin magma is?
- What is the most common type of magma?
- Can magma melt steel?
What are the 3 types of volcanoes?
There are three main types of volcano – composite or strato, shield and dome.
Composite volcanoes, sometimes known as strato volcanoes, are steep sided cones formed from layers of ash and [lava] flows.
The eruptions from these volcanoes may be a pyroclastic flow rather than a flow of lava..
Which type of magma is most explosive?
Pelean eruptions are considered violently explosive. Plinian – These eruptions result from a sustained ejection of andesitic to rhyolitic magma into eruption columns that may extend up to 45 km above the vent.
What is the biggest type of volcano?
Shield volcanoesShield volcanoes are the largest volcanoes on Earth that actually look like volcanoes (i.e. not counting flood basalt flows). The Hawaiian shield volcanoes are the most famous examples. Shield volcanoes are almost exclusively basalt, a type of lava that is very fluid when erupted.
Which Magma has the highest viscosity?
rhyolitic magmaAnswer and Explanation: The magma that has the highest viscosity is rhyolitic magma.
How much lava is in the earth?
Zero lava is located in the Earth’s core. The core is a white-hot solid iron ball that can’t melt because of intense pressure. ‘The Earth’s interior is composed of four layers, three solid and one liquid—not magma but molten metal, nearly as hot as the surface of the sun.
What are the four categories of magma?
Basaltic magma — SiO2 45-55 wt%, high in Fe, Mg, Ca, low in K, Na. Andesitic magma — SiO2 55-65 wt%, intermediate. in Fe, Mg, Ca, Na, K. Rhyolitic magma — SiO2 65-75%, low in Fe, Mg, Ca, high in K, Na.
What makes magma explosive?
In volcanology, an explosive eruption is a volcanic eruption of the most violent type. … Such eruptions result when sufficient gas has dissolved under pressure within a viscous magma such that expelled lava violently froths into volcanic ash when pressure is suddenly lowered at the vent.
What are two ways a primary magma can be generated?
0 Answers. Answer: Primary magmas can be generated through decompression melting at mid-ocean ridges or when water dehydrated from a subducting plate promotes partial melting.
What type of magma has the lowest gas content?
Viscosity of MagmasSummary TableMagma TypeSolidified RockGas ContentBasalticBasaltLowAndesiticAndesiteIntermediateRhyoliticRhyoliteHighSep 14, 2015
Which is the most dangerous volcano in the world?
Mount VesuviusMount Vesuvius, Italy Famed for the catastrophic eruption of 79 A.D. that destroyed the Roman city of Pompeii, Vesuvius certainly deserves to be considered one of the most dangerous volcanoes on Earth. While it has been quiet since 1944, it has produced several large, explosive eruptions in the past few thousand years.
What’s the difference between magma and lava?
What is the difference between magma and lava? 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.
How deep is magma in the earth?
A layer of searing hot liquid magma trapped since Earth’s formation may lie 1,800 miles (2,900 kilometers) beneath our feet, new research suggests.
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.
What is the most common type of magma?
Viscosity of MagmasSummary TableMagma TypeSolidified RockChemical CompositionBasalticBasalt45-55 SiO2 %, high in Fe, Mg, Ca, low in K, NaAndesiticAndesite55-65 SiO2 %, intermediate in Fe, Mg, Ca, Na, KRhyoliticRhyolite65-75 SiO2 %, low in Fe, Mg, Ca, high in K, Na.Sep 14, 2015
Can magma melt steel?
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.