Question

how are extrusive and intrusive rock fromed

Answer 1

Intrusive rocks are formed from magma whereas extrusive rocks are formed from lava. • Intrusive rocks are formed deep inside the surface of the earth whereas extrusive rocks are formed at the surface of the earth when magma finds a way to eject or pour out of the surface. • Cooling and solidification of intrusive rocks takes place very slowly whereas contact with air and water causes cooling of extrusive rocks to take place at a very rapid rate.

Answer 2

Extrusive igneous rocks, also known as volcanic rocks, are formed at the crust's surface as a result of the partial melting of rocks within the mantle and crust. Extrusive igneous rocks cool and solidify quicker than intrusiveigneous rocks. They are formed by the cooling of molten magma on the earth's surface.

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