Final answer:
Fast-moving glaciers capable of moving up to 6 kilometers per year are known as Outlet Glaciers. They flow from larger ice masses and can surge rapidly downhill.
Step-by-step explanation:
The type of fast-moving glaciers capable of covering up to 6 kilometers per year is known as d) Outlet Glaciers. These glaciers act like ice rivers flowing from the larger ice masses such as ice sheets or ice caps. These glaciers can sometimes go through phases where they move extraordinarily fast in events known as glacier surges. Although they are connected to ice sheets, outlet glaciers can move at speeds that are substantially greater, due to the gradient they flow down and the geothermal heat that may be present underneath.
The rapid, high-velocity glaciers capable of covering distances up to 6 kilometers per year are classified as d) Outlet Glaciers. Functioning like ice rivers, they extend from larger ice masses like ice sheets or ice caps. Outlet glaciers exhibit dynamic behavior, occasionally undergoing accelerated movement in events termed glacier surges. Despite their connection to expansive ice sheets, these glaciers can achieve significantly higher speeds, influenced by the steep gradients they traverse and potential geothermal heat beneath. This distinct mobility contributes to their role in shaping landscapes and impacting ice sheet dynamics. The phenomenon of outlet glaciers underscores the complex interplay of factors influencing glacial movement, encompassing topographical features and geothermal conditions, offering valuable insights into the broader dynamics of glacial systems.