Year 13 - Cold Environments

Wednesday's lesson began - after the technological difficulties - with a look at the first part of Iain Stewart's Power of the Planet:

We then talked about glaciers as systems, with inputs of precipitation, energy and sediment, processes of ice movement, erosion (abrasion and plucking) and deposition, and outputs in the form of sediment, meltwater and calving.

We looked at the structure of a glacier - zones of ablation and accumulation - and the stratigraphy of a glacier... how temperature and velocity vary throughout the glacier... mechanisms of glacial movement.

We then watched another section of the Power of the Planet where Iain Stewart and glaciologist Miriam Jackson investigated what was going on underneath a glacier. You can watch that clip again here.

We finished with a quick look at processes of glacial erosion.

For next Wednesday, you are findng out about five glacial landforms - with examples of each and pictures (photographs or sketches) of each where possible.