Glacial movements refer to the slow flow of glaciers, which are large masses of ice formed from compacted snow. These movements occur due to gravity and the pressure of the ice itself, causing glaciers to creep and slide over the land beneath them. As they move, they can carve out valleys and shape landscapes, creating features like U-shaped valleys and moraines. There are two main types of glacial movement: internal deformation and sliding. Internal deformation happens when the ice flows within the glacier, while sliding occurs when the glacier moves over the ground. Both processes contribute to the dynamic nature of glaciers and their impact on the environment.