they expand
Igneous rock is formed from magma or lava that has cooled and solidified.
Igneous rocks that cooled slowly are intrusive. Igneous rocks that cooled quickly are extrusive. Intrusive rocks form larger crystals, because the crystals have a longer time to grow. Extrusive rocks have small to no crystals, because they had little or no time to grow/form.
Yes
Intrusive igneous rocks.
Andesite rocks are Igneous rocks. They are jagged and rough, and come from cooled magma.
lava
Extrusive igneous rocks.
They are rocks that formed from cooled lava on the earth's surface.
igneous rocks
Cooled lava produces extrusive igneous rock.
Minerals from the earth and cooled lava.
Earth cooled sufficiently.