How do igneous rocks form?

Question

from the modification
of existing rock
from the cementing of
sediments
from the evaporation of
water
from the cooling of
magma

Answer 1

Igneous rocks form from the cooling of magma. When magma, which is molten rock located beneath the Earth's surface, cools and solidifies, it can create igneous rocks either below the surface (intrusive igneous rocks) or on the surface after a volcanic eruption (extrusive igneous rocks).