Glacial Weathering

Question 1

Frost shattering

Answer 1

• Long period of time
• Water fills up a gap in a rock - freezes + expands = rock crack wider and open up
• Repeats
• Crack gets bigger until it shatters into angular fragments = scree

Question 2

Glacial transportation types

Answer 2

• Supraglacial Debris
• Englacial debris
• Subglacial debris

Question 3

Supraglacial

Answer 3

• Carried on the surface as lateral and medial moraine

- Consists of material that has fallen onto the glacier from the valley sides

Question 4

Englacial

Answer 4

• Carried within the body of the glacier

- May have been on the surface = buried by snow/fallen into crevasses

Question 5

Subglacial debris

Answer 5

• Moved along the floor of the valley by ice or meltwater streams formed by pressure melting