How are igeneous rock formed?

Answer 1

Igneous rocks are formed by heat, pressure and cooling. They can be formed inside a volcano or outside a volcano. If they are formed outside the volcano the rocks are called extrusive igneous rocks, like basalt. If it is formed inside the volcano the rocks are called intrusive igneous rocks, like granite.

Answer 2

Igneous rocks are formed when molten magma from beneath the Earth's surface cools and solidifies. The cooling process can happen either slowly beneath the surface (intrusive igneous rocks) or rapidly on the surface (extrusive igneous rocks), resulting in different textures and mineral compositions.