"Aa" lava is the rough sort made from cinders.
That sounds like 'Tuff'.
When lava hardens it makes igneous rock
Extrusive igneous rock forms from solidifying lava.
The lava cools.
The igneous rock forms from lava because when a volcano erupts the lava that flows from a volcano. Igneous rocks have a hot liquid in the beginning. The lava that flows forms into an igneous rock fast. When the lava reaches the surface, it cools rapidly and turns into igneous rock.
Yes, an igneous rock forms when lava is cooled. It is called an extrusive igneous rock (because lava is extruded onto the surface of the earth). A magma pool that did not erupt as lava can cool to become an intrusive rock.
When lava cools it forms extrusive igneous rock.
Such rock is extrusive igneous rock.
An extrusive igneous rock.
It is known as igneous rock.
An extrusive igneous rock.
Lava will cool to form extrusive igneous rock. The exact type would depend on the composition of the lava.
Extrusive igneous rock.