Firn
Very compacted ice, forming a glacier.
Positive Mass Balance
Inputs are bigger than outputs.
Negative Mass Balance
Outputs are bigger than inputs.
Devensian
80,000-11,500 years before present.
Holocene
11,500 Years before present - Present.
Equilibrium Line
Where the zone of accumulation meets the zone of ablation.
Ablation
The removal of snow and ice through melting.
Sublimation
The transition directly from solid to gas, without liquid.
Albedo
Darker surfaces being revealed which increases temperatures, as sun is being absorbed.