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What is a reason that molten rock at the surface is different in composition from molten rock underground?
Magma is a combination of molten silicate minerals and volatiles (gases) and Lava loses many of these volatiles (gases) when it comes in contact with the atmosphere; hence each has a different chemical composition. This is true. Also, temperature and pressure conditions differ from the surface to underground, so different crystals (that make up the magma and lava) will form. Furthermore, the composition of the magma (below ground) may be different to the lava (above ground), so the resultant rocks may have differing chemical compounds composing them.
Does magma cool above ground or beneath?
No. Molten rock under the surface is called magma. Molten rock above the surface is referred to as lava.
What word describes molten rock that is underground?
Molten rock is known as Magma when underground and has not yet been erupted onto the surface.
What name is given to molten underground?
Magma is the name given to molten underground rock. It can be found beneath the Earth's surface in the mantle and can eventually rise to the surface through volcanic activity.
What is one reason that molten rock at the surface is different in composition?
How would the lava erupted by mania loa would be expected to erupt
What distinguishes magma from lava?
magma is molten rock that is still underground and lava is molten rock that is above ground
What is the definition of lava?
Molten rock from underground that has risen to the surface. If it is only underground and has not went up, it is called magma.
When is molten rock called lava and when is it called magma?
Molten rock is called magma when it is underground and lava when it reaches the surface.
What name is given to molten rock underground?
Magma is a type of molten rock underground. Hope this helps. :)
What is hot molten rock that you can find in an underground chamber?
Magma is the hot molten rock found in underground chambers, which forms when rocks melt at high temperatures and pressures beneath the Earth's surface. When magma reaches the surface, it is called lava.
What is the difference between lava and molten rock?
Lava refers specifically to molten rock that flows on the surface of the Earth during a volcanic eruption. Molten rock, on the other hand, is the hot, liquid rock below the Earth's surface that has not yet erupted. Essentially, all lava is molten rock, but not all molten rock is lava.
What is molten material that a volcano vent?
The molten material that a volcano vents is called magma when it is still underground and lava when it reaches the surface. Magma is generated by the partial melting of rocks in the Earth's mantle, and its composition can vary depending on the type of volcano. When a volcano erupts, it releases lava, gases, and ash onto the Earth's surface.
