Revision Notes

Glaciers

1. Precipitation (snow)

2. Fresh snow and ice starts to compact at the top of the glacier. Avalanches also occur at the top of the mountain.

3. Store – of ice

4. Flow – glacier moves downhill

5. Output – in the form of evaporated water or as melt water which runs off to flow into rivers / lakes etc…

Definitions:

  • Moraine – material such as rocks and boulders that are transported by the glacier in the ice.
  • Erratics – rocks and boulders transported by the glacier and deposited in an area of different rock. They can, therefore, easily be seen to be different from the rocks around them.