The Upper Course Vertical Erosion L O To

The Upper Course – Vertical Erosion L. O: To see how rivers make waterfalls and v-shaped valleys

Revision • What are the 4 types of erosion? • How do they erode material in the river?

V-shaped valleys – copy this diagram

V – Shaped Valleys and Interlocking Spurs V – shaped valleys are: • Steep sided • Narrow river channel • Caused by vertical erosion and involve soil and loose rock falling down from the sides Interlocking Spurs are: • Caused by the river winding it’s way around areas of hard rock • Different to meanders as the valley floor and gradient is steep

Videos of V – Shaped Valleys • https: //www. youtube. com/watch? v=FIn 0 U oe. Dy. Vg&feature=player_embedded • https: //www. youtube. com/watch? v=Fkvywl h. BXZk

Fill in the Blanks In the upper course of any river, ____ is always the main force because the _____ of the river is steep and it has a lot of energy, especially during ______ and heavy rain. The main process of erosion is _____ and this causes _____ and vertical erosion of the banks and the ____ of the river. Landslides and _______ can carry materials down the slope and into the river where it is _______ away. This often makes the valley steeper and gives it a ______ appearance. snow melt, transported, erosion, gradient, abrasion, lateral, bed V-shaped, avalanches,