What is lava made out of?

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payalkhullar's profile pic

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Lava is formed from “magma”, which is nothing but a very hot liquid (fluid or semi-fluid) that flows inside the Earth. When a volcano erupts, this magma comes out and reaches the Earth surface, cools down after contact with the atmosphere and finally becomes lava. It can be in the molten form during volcanic explosion and in the solid, crystalized form after the cooling. In its molten form, it has a really high temperature. When it solidifies, the temperature decreases considerably. Lava is mainly composed of crystals, volcanic glass, and volcanic gases. The chemical composition of lava can vary from place to place. However, silicon and oxygen are generally present in the highest amounts. In addition to these, some other elements like aluminum, iron, magnesium, sodium, calcium, titanium, etc. are also found in significant amounts. Igneous rocks could also be formed after the solidification of lava or magma.

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laurto's profile pic

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Lava is molten rock. It is formed inside the Earth and is liquefied by a source of heat called geothermal energy. Lava is made up of igneous rocks . 

Jyotsana's profile pic

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Lava is made up of crystals, volcanic glass and bubbles (volcanic gases). When the magma gets closer to the surface and cool, it begins to crystallize minerals like olivine and form bubbles of volcanic gases. When the lava erupts, it is made up of crystals,   liquid and bubbles.

taangerine's profile pic

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Lava is made out of silicon, oxygen, aluminum, iron, magnesium, calcium, sodium, potassium, phosphorus, and titanium. But, mainly -- molten rocks. 

rachellopez's profile pic

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Lava is made up of molten rock, which contains crystals, volcanic glass, and volcanic gases. Magma cools as it gets closer to the surface which is what crystallizes the minerals and forms the bubbles (gas). Liquid freezes when the lava erupts, forming the volcanic glas.

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zumba96's profile pic

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Lava is formed by magma which is molten rocks which includes volcanic gasses 

decent444's profile pic

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It is made out of molten rocks and megma and contains crystals and gases 

CaitlynnReeves's profile pic

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Lava is molten rock that has been crushed and heated in the earth's mantle. When it is below the surface of the earth it is called magma. Magma only becomes lava when it leaks through breaks in the crust. 

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