This chapter introduces the field of physical geography and its main perspectives. Physical geography is the study of natural environments and physical processes on Earth. It involves fields like climatology, geomorphology, and hydrology. The chapter outlines three major perspectives in physical geography: the spatial science perspective, which examines the location and characteristics of places; the physical science perspective, which views Earth as an interconnected system; and the environmental science perspective, which focuses on human-environment interactions and sustainability. The chapter concludes by discussing important concepts in physical geography like models, systems, equilibrium, and feedback loops.