River Landforms - Erosion

Question 1

Waterfalls and Gorges are Found in the __________ Course of a River.

Answer 1

Upper.

Question 2

Waterfalls Form where a River Flows Over an Area of _______ Rock Followed by an Area of ___________ Rock.

Answer 2

Hard…Softer…

Question 3

Softer Rock is __________ More than Hard Rock in Waterfalls.

Answer 3

Eroded.

Question 4

A Steep Drop is ___________ Through Erosion, Called a Waterfall.

Answer 4

Created.

Question 5

Hard Rock is Undercut by Erosion. It Becomes Unsupported and _____________.

Answer 5

Collapses.

Question 6

Formation of an Interlocking Spur?

Answer 6

• In the Upper Course of a River Most of the Erosion is Vertically Downwards. This Creates Steep-Sided, V-Shaped Valleys.
• The Rivers Aren’t Powerful Enough to Erode Laterally, so they have to Wind Around the High Hillsides that Stick Out.
• The Hillsides that Interlock with Each Other as the River Winds Around them are Called Interlocking Spurs.