**ESAY+5.2**

=5.2 Igneous rocks=

Vocabulary

 * 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

Introduction

 * 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