What’s the difference between lava and magma?

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Asked on October 29, 2018 in No Category.
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Lava is actually magma after it has erupted – once it reached the surface of the Earth.
Magma is the name given to molten rock while it’s still under the Earth’s surface.
Lava’s temperature usually ranges between 1300 and 2200 degrees F.
The temperature of magma usually ranges between 1300 and 2400 F.
Lava cools much faster than magma, which may lead to part of the melt being unable to crystallize and thus becoming glass.
Magma takes considerably longer to cool underground, allowing the crystals to grow large.
When cooling down after the eruption, lava forms volcanic rocks, such as andesite, basalt or rhyolite.
Magma that cools down slowly under the surface of the earth can form plutonic rocks such as diorite, granite, or gabbro.
The term “lava” has its origins in the Italian language and it is believed to derive from the much older Latin word “label”.
The term “magma” has its origins in Ancient Greek.

Answered on October 30, 2018.
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