This document discusses geomorphology and weathering. It defines geomorphology as the study of Earth's surface processes and landforms. Geomorphologists use various methods like remote sensing and field observations to understand these processes and predict future landscape changes. The document then defines weathering as the natural breakdown of rocks and minerals by physical and chemical processes. Physical weathering breaks down rocks through forces like wind and water, while chemical weathering involves processes like oxidation and acid rain. There are different types of physical weathering like abrasion, frost wedging, and thermal expansion that wear rocks down over time.