why undergroud lava call magma?

Answer 1

That's a daft question

You might just as well ask why surface magma is called lava

Answer 2

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.
Hawaiian underwater magma flow
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Hawaiian underwater magma flow

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 hot spots, 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.

Answer 3

Underground, Lava is called Magma because it is a soild form (Rock) and When a volcano is about to arupt it is heated to a luqid form called Magma.

Answer 4

Its a Latin word, derived originally from the Greek, meaning to squeeze or knead.
Another meaning of magma is a thick paste.

Answer 5

just because, it is the same as why do you drive in the parkway and park in the driveway

Answer 6

because the name volkswagon was already taken