In geography texts, information about the Earth, its various regions and their conditions, population and settlements, climate, vegetation and our solar system is presented. These texts also describe different changes and developments (= processes, such as the formation of gas planets).
A typical feature of geography texts is that they classify things. They contain many new concepts (like asteroid, moon) which are grouped into categories (solar system) and subcategories (moons, planets, etc.). Concepts are explained with definitions and examples. When reading geography texts, you should identify the main categories and groups to which subcategories belong. Also, definitions should be found and explained in your own words.