Geography SSS1 First Term

Week 8


Performance Objective

The student should be able to:

  1. Types of Rock
  2. Characteristics of Rocks
  3. Mode of Formation of rock types
  4. Importance of Rock to Man

Definition of Rock

A rock is any solid substance that forms part of the earth’s crust. Rock is made up of minerals. The most common rocks and their minerals are:

Types of Rocks

Rocks are grouped based on their origin and mode of formation

  1. Igneous Rocks: They result from the eruption, cooling and solidification of magma from beneath the earth. They are usually crystalline. There.... View More

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