Question

Formation of igneous rocks due to hardening of magma​

Answer 1

Answer:

When lava reaches the surface of the Earth through volcanoes or through great fissures the rocks that are formed from the lava cooling and hardening are called extrusive igneous rocks. ... These are called intrusive igneous rocks because the magma has intruded into pre-exiting rock layers.

Explanation:

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Answer 2

The formation of igneous rocks due to the hardening of magma​ is as follows:

• In essence, the formation of igneous rocks is done when the magma (or lava) gets cooled and becomes solid.

• Due to the intense heat, the development of magma is done in the lower crust or upper mantle.

• When it is hot, it rises to the surface and also passes through some changes due to temperature and pressure.

• This makes it cool, solid and crystal.