Shown here is a geographical map of USA land features. Here's a very basic definition of GEOGRAPHY:
Geography is the study of the earth and its features, such as terrain, area measurements, and climate. The word comes from two Greek words that mean "to describe the earth." A very closely related topic is cartography, the study and creation of maps.
Geography is divided into two main branches; human geography and physical geography. But there's a smaller branch of study known as regional geography, which aims to understand or define the physical characteristics of a particular area, like the United States of America.
The USA has a wide range of geographical features. These include arid deserts in the southwest, tropical rainforests in Hawaii, the geographically unique Florida Everglades, and the frozen tundras of Alaska.