In three to five sentences, explain how the valleys and mountain ranges form. Please

1 answer

Valleys and mountain ranges form through processes of tectonic activity and erosion. Tectonic forces, such as the movement of tectonic plates, can cause the Earth's crust to buckle, fold, and uplift, forming mountain ranges. These forces also create fractures and faults where valleys can develop. Over time, erosion by water, wind, and ice can further shape and deepen valleys, while simultaneously wearing down mountain ranges. Thus, a combination of tectonic activity and erosion processes contribute to the formation of valleys and mountain ranges.