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What is lava made out of?
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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.
Posted by payalkhullar on March 4, 2014 at 8:53 AM (Answer #1)
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.
Posted by CaitlynnReeves on March 5, 2014 at 2:52 PM (Answer #2)
Elementary School Teacher
It is made out of molten rocks and megma and contains crystals and gases
Posted by decent444 on March 5, 2014 at 8:27 PM (Answer #3)
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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.
Posted by Jyotsana on March 6, 2014 at 12:53 AM (Answer #4)
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