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how will you define the igneous rock?​

Sagot :

How will you define the igneous rock?

Igneous rock, also known as magmatic rock (derived from the Latin word ignis, which means "fire"), is one of the three major rock types. The other two are sedimentary and metamorphic. The cooling and solidification of magma or lava produces igneous rock. Magma can be created by partial melting of existing rocks in the mantle or crust of a planet. One or more of three processes can cause melting: an increase in temperature, a decrease in pressure, or a change in composition. Extrusive rocks form below the surface as intrusive rocks solidify, and intrusive rocks form above the surface as extrusive rocks. Igneous rock can develop with or without crystallization, resulting in granular, crystalline rocks or natural glasses.

How well do you know igneous rock?

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Answer:

form when hot, molten rock crystallizes and solidifies. Igneous rocks are divided into two groups, intrusive or extrusive, depending upon where the molten rock solidifies.