Igneous Rocks. Igneous rocks Form from “magma” (molten rock) “Lava” is magma that reaches the surface and looses gas (mostly water and CO 2 ) Magma that.
Lesson 5: Igneous Rocks 1/8/15. Igneous Rocks are rocks formed by molten, or melted rock as it cools and hardens. This process can occur fairly quickly.
