inputs, outputs and transfers

Question 1

inputs

Answer 1

added across the whole glacier, but mainly concentrated towards the head in the zone of accumulation

Question 2

outputs

Answer 2

lost across the whole glacier, mainly concentrated towards the snout in the zone of ablation

Question 3

inputs causing accumulation

Answer 3

• wind blown snow
• precipitation
• avalanche and rock debris
  solar energy

Question 4

outputs causing ablation

Answer 4

• meltwater
• wind blown snow
• sublimation
• calving

Question 5

transfers of mass

Answer 5

excess mass from the zone of accumulation is transferred to the zone of ablation due to gravity which causes the glacier to deform and flow

Question 6

ice forms from snow in zone of accumulation

Answer 6

firn snow is produced, this percolates in summer but when it refreezes it becomes increasingly dense. after a number of years most of the air is squeezed out and ice is formed