2. Earth is made up of rocks and
minerals.
The rocks forming the crust of the
earth are in solid state.
Any Mass of harder portion of the
earth’s crust can be called a
Rock.
3.
4. The crust of the earth is formed by a
variety of rocks differing from each other
in composition , texture , colour , etc.
The three type of Rocks are :-
1) Igneous Rocks 2)Sedimentary
Rocks
3)Metamorphic Rocks
We are going to learn about only Metamorphic
5.
6. Metamorphic Rocks are formed
through the process of
metamorphism.
The term metamorphism means
alteration or transformation.
Metamorphism may involve both
physical as well as chemical changes
in the characteristics of the pre-
7.
8. Most of the human activities are
performed the rock sphere of the
earth .
Rocks hold a great significance for