2007-01-10 07:35:02 · 7 answers · asked by teran 1 in Science & Mathematics ➔ Geography
Magma is beneath the ground and lava is above the ground.
2007-01-10 07:38:46 · answer #1 · answered by munro 1 · 0⤊ 0⤋
Magma is molten rock (lava) from which igneous rock forms. MAGNETAR A magnetar is a highly magnetic star. Magnetar have magnetic fields of about 10 15 Gauss, about a thousand trillion times stronger than the Earth's. The strong magnetic field puts the star's surface under enormous stress, perhaps causing "starquakes" and resulting high energy bursts of radiation. These short-lived neutron stars were theorized to exist in 1992 by Robert C. Duncan and Christopher Thompson. ...
Lava is molten rock that a volcano expels during an eruption. Lava, when first exuded from a volcanic vent, is a liquid at very high temperature: typically from 700°C to 1200°C (1300°F to 2200°F). However, the viscosity of lava is 100,000 times that of water. Nevertheless, the viscous rock can flow many miles before eventually cooling and solidifying.
2007-01-10 23:00:12 · answer #2 · answered by brady ewart 3 · 0⤊ 0⤋
Magma is molten rock located beneath the surface of the Earth (or any other terrestrial planet), and which often collects in a magma chamber. Magma may contain suspended crystals and gas bubbles. By definition, all igneous rock is formed from magma.
Magma is a complex high-temperature fluid substance. Temperatures of most magmas are in the range 700°C to 1300°C, but very rare carbonatite melts may be as cool as 600°C, and komatiite melts may have been as hot at 1600°C. Most are silicate solutions.
It is capable of intrusion into adjacent rocks or of extrusion onto the surface as lava or ejected explosively as tephra to form pyroclastic rock.
Environments of magma formation and compositions are commonly correlated. Environments include subduction zones, continental rift zones, mid-oceanic ridges, and hotspots, some of which are interpreted as mantle plumes. Environments are discussed in the entry on igneous rock. Magma compositions may evolve after formation by fractional crystallization, contamination, and magma mixing.
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Lava is molten rock expelled by a volcano during an eruption. Magma is molten rock below the earth's surface. Lava, when first exuded from a volcanic vent, is a liquid at temperatures from 700 °C to 1,200 °C (1,300 °F to 2,200 °F). Although lava is quite viscous, about 100,000 times the viscosity of water, it can flow great distances before cooling and solidifying.
Lava solidifies to form igneous rock. The term "lava flow" refers to the hardened formation, whereas the one still having molten rock associated, is called an "active lava flow". The word 'lava' comes from Italian, and is probably derived from the Latin word labes which means a fall, slide, or sinking in. The first use in connection with extruded magma was apparently in a short account written by Francesco Serao [1] on the eruption of Vesuvius between May 14 and June 4, 1737. Serao described "a flow of fiery lava" as an analogy to the flow of water and mud down the flanks of the volcano following heavy rain.
You could get more information from the 2 links below...
2007-01-10 22:34:31 · answer #3 · answered by catzpaw 6 · 0⤊ 0⤋
They're the same thing. Except magma is still in the volcano. Lava is what you're running from =]
2007-01-10 07:43:45 · answer #4 · answered by Anonymous · 1⤊ 0⤋
Magma is underneath the ground in the chamber and lava is what a volcano or hotspot spews out when it erupts.
2007-01-10 08:39:15 · answer #5 · answered by jessie lynn 2 · 0⤊ 0⤋
magma is rock in the botom of the volcano and lava is melted rock
2007-01-10 09:36:50 · answer #6 · answered by I don't know 2 · 0⤊ 0⤋
magma is under ground, lava is above ground
2007-01-10 07:42:23 · answer #7 · answered by mrsrapp 2 · 0⤊ 0⤋