What is the noun form of lava?
Noun . lava (countable and uncountable, plural lavas) The molten rock ejected by a volcano from its crater or fissured sides. (informal, proscribed) Magma. A shade of red, named after the volcanic lava.
What is a lava eruption?
Lava is molten rock ( magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon. Magma is generated by the internal heat of the planet or moon and it is erupted as lava at volcanoes or through fractures in the crust, usually at temperatures from 800 to 1,200 °C (1,470 to 2,190 °F).
What is a felsic lava called?
Felsic lava. Felsic or silicic lavas such as rhyolite and dacite typically form lava spines, lava domes or "coulees" (which are thick, short lava flows) and are associated with pyroclastic (fragmental) deposits.
What is the difference between a lava and a lava flow?
The volcanic rock resulting from subsequent cooling is also often described as lava . A lava flow is an outpouring of lava created during an effusive eruption. Explosive eruptions produce a mixture of volcanic ash and other fragments called tephra, rather than lava flows.
What is the Latin name for Lava?
The word lava comes from Italian and is probably derived from the Latin word labes, which means a fall or slide.
How do you say lava in different languages?
In other languages lavaAmerican English: lava /ˈlævə, ˈlɑvə/Arabic: حِمَمٌ بُرْكَانِيَّةٌBrazilian Portuguese: lava.Chinese: 熔岩Croatian: lava.Czech: láva.Danish: lava.Dutch: lava.More items...
What is lava in English from Spanish?
lava, the ~ Noun. volcanic rocks, the ~ Noun.
How do you say fire in different languages?
In other languages flameArabic: لَهَبBrazilian Portuguese: chama.Chinese: 火焰Croatian: plamen.Czech: plamen.Danish: flamme.Dutch: vlam.European Spanish: llama.More items...
English
From Italian lava (“lava”), originally, in Naples, a torrent of rain overflowing the streets, either from lavare (“to wash”) (see etymology for the English verb lave) or from labi (“to fall”) .
Finnish
From Proto-Finnic *lava (compare Estonian lava, Livonian lovā, Veps lava ), borrowed from Proto-Baltic *lā́ˀwāˀ (compare Latvian lāva, Lithuanian lova ).
Galician
This entry needs pronunciation information. If you are familiar with the IPA then please add some!
Spanish
From Italian lava (“lava”) (Neapolitan dialect), from lavare (“to wash”) .
Tokelauan
From Proto-Polynesian *lawa. Cognates include Hawaiian lawa and Samoan lava .
Where does the word "lava" come from?
The word lava comes from Italian, and is probably derived from the Latin word labes which means a fall or slide. The first use in connection with extruded magma (molten rock below the Earth's surface) was apparently in a short account written by Francesco Serao on the eruption of Vesuvius in 1737.
What is lava in science?
For other uses, see Lava (disambiguation). Lava is molten rock ( magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon. Magma is generated by the internal heat of the planet or moon and it is erupted as lava at volcanoes or through fractures in the crust, usually at temperatures from 800 to 1,200 °C ...
Why is basalt lava thicker than the thickness of the moving lava flow?
The thickness of a basalt lava, particularly on a low slope, may be much greater than the thickness of the moving lava flow at any one time, because basalt lavas may "inflate" by supply of lava beneath a solidified crust. Most basalt lavas are of ʻaʻā or pāhoehoe types, rather than block lavas.
How hot is a silicate lava?
Whereas temperatures in common silicate lavas range from about 800 °C (1,470 °F) for felsic lavas to 1,200 °C (2,190 °F) for mafic lavas, the viscosity of the same lavas ranges over seven orders of magnitude, from 10 4 cP for mafic lava to 10 11 cP for felsic magmas.
How much of lava flows are mafic?
On Earth, 90% of lava flows are mafic or ultramafic, with intermediate lava making up 8% of flows and felsic lava making up just 2% of flows. The viscosity also determines the aspect (thickness relative to lateral extent) of flows, the speed with which flows move, and the surface character of the flows.
How low is the viscosity of basalt?
Viscosities can be relatively low, around 10 4 to 10 5 cP, although this is still many orders of magnitude higher than water. This viscosity is similar to that of ketchup. Basalt lavas tend to produce low-profile shield volcanoes or flood basalts, because the fluidal lava flows for long distances from the vent.
What is the composition of lava?
Pāhoehoe and ʻaʻā lava flows side by side in Hawaii, September 2007. The composition of almost all lava of the Earth's crust is dominated by silicate minerals: mostly feldspars, feldspathoids, olivine, pyroxenes, amphiboles, micas and quartz.
