Long Profile - GCSE Geography Definition

In GCSE Geography, the term "long profile" refers to a side view of a river from its source to its mouth. It shows how the river's gradient, or slope, changes as it flows downstream. At the source, which is usually in high areas like mountains, the river is steep and fast. As it travels further, the slope becomes gentler and the river slows down. By the time it reaches the mouth, where it empties into a sea or lake, the river is usually at its widest and slowest. Understanding the long profile of a river helps us learn how rivers shape the land and transport materials like rocks and soil.