Glacial Erosion Features 1

Which side of a mountain do corries form on? 

Why do corries form on the North side of mountains? ​ ​ (a)  

• They are shady so the snow doesn't melt.
• What drags the glacier downhill? 
• The bergschrund crevasse increases erosion. 

What drags the glacier downhill? ​ (a)  

• Gravity
• Space Aliens
• The Bergschrund
• Santa's Elves

What allows meltwater and rocks below the glacier to increase erosion? 

• Arete

• Rotational slip 

• Bergschrund crevasse

• Tarn

Match the following

• Sandpapering by rocks in ice

• Abrasion

• Ice freezing to rocks pulls them out

• Freeze thaw

• Ice freezing in cracks and shatters rock

• Plucking

Ice freezing to rocks and pulling them out is called?

• Plucking

• Abrasion

• Freeze thaw

• Sandpapering by rocks in ice

Sandpapering the valley by rocks in ice is called?

• Plucking

• Abrasion

• Freeze thaw

• Ice freezing to rocks pulls them out

How does an arête (knife edge ridge) form?

• Friction erodes the valley sides

• Ice freezing in cracks, expands and shatters rock

• Rotational slip

• Two back to back corries erode a mountain

How is the rock lip of a corrie formed?

• Rotational slip

• Friction slows the ice and it erodes less powerfully

• Friction speeds the ice

• Abrasion and plucking

Why does an arête (knife edge ridge) have a sharp ridge line? 

• Freeze thaw

• Friction

• Abrasion

• Bergschrund