Question

The cooling and hardening of magma or lava is called what?

Answer 1

HeYaa!☺️

Igneous rocks are formed by the cooling and hardening of molten material called magma .

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Answer 2

Answer:

When lava is underground in its molten state it is called magma. As it reaches the ground, and air, it is called lava. Once lava begins to harden it can turn into a variety of shapes and colors.

And forms igneous Rocks after hardening.