Question

What is one of the differences between the erosion of riverbeds and the erosion of glaciers?

The riverbed erodes into an L-shaped valley, whereas the glacier erodes into a W-shaped valley.
The riverbed erodes into a U-shaped valley, whereas the glacier erodes into a V-shaped valley.
The riverbed erodes into a V-shaped valley, whereas the glacier erodes into an L-shaped valley.
The riverbed erodes into a V-shaped valley, whereas the glacier erodes into a U-shaped valley.

Answer 1

The correct statement is the fourth one. The riverbed erodes into a V-shaped valley while the glacier erodes into a U-shaped valley. Glaciers and rivers have tributaries or small rivers that join the main river. For glaciers, as it erodes deeper, the small river is left higher up the steep sides. For rivers, as it erodes, ridges of land form in its upper course.