What are glaciers and how are they formed?

Answer 1

Glaciers are large blocks of ice found in areas of high latitude or high altitude. They erode in two ways: abrasion and plucking. Abrasion can only occur when the glacier is moving. Subglacial debris embedded in the base and sides of the glacier scrapes the valley base and walls as it moves through the valley. Plucking involves the glacier moving over a resistant outcrop of rock where pressure-melting creates meltwater. The meltwater then flows to an area of low pressure where is subsequently refreezes attaching itself to both the surrounding rock and the glacier itself. The glacier then advanced physically ripping the rock out of the valley.

Answer 2

Glaciers are large masses of permanent ice. They start to form when snow collects and does not melt. The snowflakes crystalize again to form the new snow. The famous Titanic ship was hit by an ice berg, not a glacier.

Answer 3

Glaciers are large bodies of ice that move slowly over land under their own weight. They form when snow accumulates and compacts over time, eventually transforming into ice. This process requires a combination of cold temperatures, snowfall, and time for the ice to thicken and flow.