Glaciers are slow-moving masses of ice. It is formed through snowfall which, over many years, compresses and thickens to form ice masses. Glaciers move in two ways: internal flow and basal sliding. Internal flow happens when the pressure and gravity on the ice cause the glacier to move downhill while basal sliding happens when the base of the glacier is slightly melted causing the whole of it to move, as well. There are eight types of glaciers such as the following:
Ice caps and continental ice sheets which are the largest glacier in the plane – it is so large that it will affect our weather and sea levels if it disappears, outlet glaciers which have exposed bedrocks as its border, valley glaciers which are glaciers that slides away from the field of ice, tidewater glaciers which are glaciers that flow down to the ocean, hanging glaciers which are glaciers in the mountains that usually stops or ends at a cliff, piedmont glaciers, cirque glaciers and rock glaciers.