* Igneous means "formed by fire."

* Extrusive means the lava erupted onto the Earth's surface.

Here are some common examples of extrusive igneous rocks:

* Basalt: A dark, fine-grained rock, often found in volcanic flows.

* Rhyolite: A light-colored, fine-grained rock, often with a glassy texture.

* Andesite: A medium-colored, fine-grained rock, often found in volcanic arcs.

* Obsidian: A black, glassy rock formed when lava cools rapidly.

* Pumice: A light, porous rock with a foamy texture.

* Scoria: A dark, vesicular rock with a rough, clinkery texture.

The specific type of extrusive igneous rock depends on factors like the chemical composition of the lava, how quickly it cools, and the amount of gas it contains.