Shaped Valleys 🏜️ Flashcards
How do V-shaped valleys change shape into U-shaped valleys by glaciers
As glaciers move down hill, they change V -shaped valleys into U-shaped valleys by eroding the sides
What is a U-shaped valley also called?
A Glacier trough
When a river creates V shaped valley, where does it mainly start?
On the base of the valley
When a glacier creates a V shaped valley, what happens to the valley?
The valley fills and creates steep sides and wide bases
What is the formation of U shaped valley?
1️⃣ before glaciation V shaped valley is formed by a river and during the ice age a glacier moves down the Valley
2️⃣ rocks trapped in the bottom of the ice act like sandpaper wearing away the valley abrasion
3️⃣ glacier deepens, straightens, and widen the valley by abrasion
4️⃣ after the ice melts a U shaped valley is formed
What are five characteristics of a glacier trough? (U shaped valley)
Hanging valleys
Misfit stream
Wide and flat valley floor
Interlocking spurs
Steep Valley sides
What is a misfit stream?
The river that flows through the valley after the ice age is described as a misfit stream as it could never have eroded this valley
What happens to the interlocking spurs a the glacier cut through the land?
Interlocking spurs are truncated as the glacier cuts through the land
What are hanging valleys?
Hanging valleys are between truncated spurs and have not been eroded as deeply as the main valley
