There are three types of rocks!
These include:
-Metamorphic
-sedimentary
-igneous
The rock that forms on earth's surface is extrusive rock or otherwise known as a metamorphic rock.
Igneous rock. Extrusive igneous rock forms at or near the surface, intrusive igneous rock forms below the surface.
Igneous rock that forms below the Earth's surface is intrusive.
Such rock is extrusive igneous rock.
a Obsidion rock
Intrusive igneous rock
Obsidian
volcano
Intrusive igneous rock (plutonic rock).
a Obsidion rock
Metamorphic in a sentence
Intrusive igneous rock