8I4.00 To understand the rock cycle. The learner will 4.01 Define rock 4.02 Explain the differences among igneous, sedimentary and metamorphic rocks. 4.03 Describe and explain the rock cycle. Igneous Rocks A. Definition B. Texture or Classification 1. Extrusive C. Categories 1.
Sedimentary rock provide evidence for the long history of the earth.
Some changes in the earth's surface are abrupt while other changes happen very slowly. Today we are going to learn how this rock formed, where it is found and how we can go about classifying it. Rocks are found everywhere. They are on top of the earth's surface as well as below earth's surface. Rocks are composed of chemical substances known as minerals .