The completion of each statement about glaciers is as it follows:
- Glaciers cause erosion by abrasion and plucking.
Abrasion consists of the wear, scratching and polishing produced in the bedrock by the thicker rock fragments carried by the ice. In this way, grooves are formed.
Plucking often occurs when advancing ice pushes against fractured bedrock. Additional breaks can form as a result of stress, while warmer temperatures and friction from glacier movement can cause melting.
- The sediment deposited by glacier is called a moraine.
Moraine are the deposits of trawls of material fragmented by glaciers, which form mountain ranges due to their accumulation.
- When a chunk of ice left behind by a receding glacier melts, the water stays in the kettle, forming a kettle lake.
Among the most varied features left by glaciers are contact ice deposits due to continental glaciation.
These geoforms develop along the glacier outwash, leaving ice deposits. It forms a kettle lake when a large chunk of ice leaves a depression in glacial drift; as the ice melts a kettle like hole is formed. The hole is filled with flow from the river or from groundwater sources.
Therefore, we can conclude that glaciers cause erosion by abrasion and plucking, the sediment deposited by glacier is called a moraine and when a chunk of ice left behind by a receding glacier melts, the water stays in the kettle, forming a kettle lake.
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