Lava cools quickly and forms rocks with small crystals. They are called extrusive igneous rocks.
Igneous rock, such as basalt or rhyolite, is formed when magma cools at the Earth's surface.
Lava cools down and accumulates into rock as it reaches Earth's surface
ignious rock
Igneous rock. Extrusive igneous rock forms at or near the surface, intrusive igneous rock forms below the surface.
Magma.
magma
If the magma cools on the surface of the crust, it is called extrusive igneous rock
The general term for igneous rock that cools on the surface is "extrusive igneous rock." This type of rock forms when molten lava erupts onto the Earth's surface and cools relatively quickly. Examples include basalt and rhyolite.
igneos rock
i think the answer your looking for is igneous rock.....that is the type of rock you get after megma cools.....
When magma cools on the surface it forms igneous rock.
Such rock is extrusive igneous rock.