processes in glaciers

3 processes are erosion, deposition and transportation

erosion

• abrasion- glacier scrapes material against the valley sides widening and deepening the valley.
• plucking- meltwater gets into cracks in rocks and freezes this sticks the rock to the ice. as  the glacier moves away the rock is pulled with the glacier, ********* the rocks away.

factors that effect the speed of erosion

• speed of ice movement- the faster it moves the more erosion takes place
• temperature of cover ice- warm based glaciers move faster due to a  more lubricated base meaing it can move faster, so erosion can happen quicker
• ice thickness- the thicker the ice the greater the erosion because thw weight of the ice will create more pressure melting the base and lubricating it, allowing it to move quicker.
• debris- more debris means there is a greater load to ther is more erosion (abrasion)
• …