U- Shaped Valleys Name

Before the ice age

River in mountains flows down _____________ valleys.

The river erodes downwards as rocks and __________ are bounced and scraped along the channel bed.

The Start of the ice age

At the start of the ice age the river _____________ and is joined by glaciers as they are squeezed out of corries.

Smaller glaciers also fill the tributary valleys; these join the main _____________, increasing the power and volume of the erosion in the valley.

During the ice age

During the ice age the size and power of glacier _________ because more snow falls at the top of the mountain.

The glacier _________ the side and floor of the valley by _____________ and abrading while moving downhill. This leads to steeper valley side and ___________valley floor: - making the valley into U shaped

After the ice age

When the ice age is over we are left with the ______________ valley.

Once again __________ flows down the valley, but there are too small for the wide valley floor: - we call them misfit stream/riverThe very steep valley side is called: - hanging valley.

Fill in the gaps by selecting the right word from the word file below; make sure the sentences flow smoothly ♫ ♪

U-Shaped moraines glacier plucking river freezes increases erodes V-Shaped wider

U-Shaped Valley Activity sheet Name____________________

Instruction

1. Add the right labels to complete the diagrams.

River channel Steep sloping sides Spur Very steep sides

V-shaped U- shaped

Broad, flat floor

Truncated spur

Waterfall Misfit stream Winding river Hanging valley

2. Give the completed diagram a title.

3. Answer the following questions in your jotter.

a) What is a ‘misfit stream’? (2) b) What are the positives of having a waterfall from a hanging-valley? (2)

Title:

Title: