1.b physical factors affecting glaciers

Question 1

Climate - Wind

Answer 1

moving force capable of erosion, transportation and deposition which contribute to the shaping of a glacier landscape

Question 2

Climate - Temperature

Answer 2

above 0 accumulated snow melts

high altitude - more variation
High latitudes - less variation

Question 3

geology - Lithology

Answer 3

Clay –> little resistance to erosion due to weak joints between particles

Some highly resistant made from interlocking crystals and are likely to form prominent glacial landforms

Some are made from calcium carbonate therefore soluble in weak acids ( vulnerable to decay)

Question 4

Geology - structure

Answer 4

Structure concerns the physical properties of rocks - jointing, bedding,faulting and permeability

Porous rocks tiny air spaces gain water –> expands causing for erosion

Angle of dip rocks can have a strong influence on valley sides

Question 5

High latitude

Answer 5

cold dry climates with later variations

Large stable ice sheets due to the cold conditions

Question 6

High altitude

Answer 6

higher precipitation but more variation

Question 7

Relief

Answer 7

the steeper the relief the faster the glacier movement

Question 8

Aspect

Answer 8

Glaciers with an aspect facing away from the sun –> have positive mass balance and are more likely to be greater with erosion due to their larger mass