Glacial landforms

Reorder the following to explain how a corrie is formed

• A rock lip is formed where erosion is least

• Overtime the corrie can fill with water creating a tarn

• This creates a bowl shaped feature called a corrie

• Snow fills a hollow, this compresses and turns to ice

• Plucking steepens the back wall, whilst abrasion deepens the hollow

Reorder the following to explain how a glacial trough (U shape valley) is formed

• A ribbon lake and a misfit stream can be found in a glacial trough.

• Abrasion widens the valley floor.

• During an ice age the glacier fills the valley. Plucking steepens the sides, creating truncated spurs.

• This creates a U shape valley called a glacial trough.

• The valley starts as a V shape with a river winding round the interlocking spurs.

Reorder the following to explain how a hanging valley is formed.

• As the glaciers are smaller less erosion takes place

• Plucking steepens the side, whilst abrasion widens the bottom

• This creates a hanging valley at the top of the U shape valley

• Sometimes a waterfall is found in a hanging valley

• Smaller glaciers meet in the U shape valley

Reorder the following to explain how a drumlin is formed.

• It hits an obstacle, such as a hollow, and loses energy.

• The glacier moves downhill due to gravity.

• The glacier continues to move over and smooths out the sediment creating a tapered end.

• This creates a drumlin in the direction of the ice flow.

• Sediment is deposited creating a steep side.

Match the type of moraine to its description

• Moraine formed in the middle of a glacier

• Ground

• Moraine at the side of a glacier

• Medial

• Moraine left behind as a glacier retreats

• Lateral

• Moraine found underneath a glacier

• Recessional

• Moraine at the end of a glacier

• Terminal