In three to five sentences, explain how

valleys and mountain ranges form.

1 answer

Valleys are formed through a process called erosion, which involves the gradual wearing away of the earth's surface by wind, water, or ice. As rivers, glaciers, or other erosional agents move across the land, they carve out channels and remove sediment, creating valleys. Mountain ranges, on the other hand, are typically formed by tectonic activity. When two or more tectonic plates collide or move apart, it can lead to the uplift of the earth's crust, resulting in the formation of mountains.