5.2 Igneous rocks


Extrusive rock:- Igneous rock that forms from lava on Earths surface
Intrusive rock:-Igneous rock that forms when magma hardens beneath Earths surface
Porphyritic texture:-An igneous rock texture in which large crystals are scattered on a background of much smaller crystals



  • Think that you are on a spacecraft in 1.B.C.E
    • You are going to see the earth
      • You will see the green and blue earth which scientist cannot see it today.
      • Scientists would see volcanoes and like marshmallows which is getting heated

Characteristics of Igneous Rock