How is magma made?

Answer 1

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Answer 2

Magma is formed by the partial melting of material within the Earth. The most common cause of this melting is due to changes in the melting temperature of this material.

This is caused either by a decrease in the confining pressure of mantle material which causes a decease in the melting temperature and is technically known as adiabatic decompression meltingor due to the presence of volatiles within the mantle material which exsolve from downgoing slabs during subduction.

Answer 3

Magma is composed of melted rock that has been cooled after it has been erupted through a volcano. The rocks within the magma are different types of minerals that have different melting points.

Answer 4

Magma is highly heated molten rock that comes to the surface of usually through volcanic eruption. Magma is usually found beneath the earth located near the earth's core and can sometimes contain crystals and gases.

Answer 5

magma is a mixture of molten rock, which is formed deep beneath the earth's surface, the magma itself is not made by volcanos as such, magma is constant beneath the earth everywhere as part of its layers, it helps to shift the tectonic plates, so in essance, magma itself is not made by volcanos, volcanos just release the magma when it erupts along with other gases and solids :)

Answer 6

I think it is made out of melted rock...

It also has some oxygen, hydrogen and a tiny little bit of water, if it had too much water in it, it would cause the melting temperature to drop by nearly 100 degrees.

Magma typically consists off silicon, oxygen, aluminum, magnesium, iron, calcium, sodium, potassium and titanium.

Oxygen and silicon make up 48-76% by weight

Answer 7

magma is made of the melted rock inside the mantel.

Answer 8

Molten rock with varying composition depending on the type of formation and source.

Answer 9

Hot rocks. The only difference of magma and lava is that lava is what it is called once it breaks through the earths crust.

Answer 10

Magma is just lave, but underground. it becomes lava when it touches air.