Explain how glaciers change and shape the land?
By their shear weigh,t glaciers grind and sculpt the land. As a glacier travels, it picks up large boulders and smaller debris and transports them down hill. When it rains, water flows into the cracks and crevases . The water then freezes causing the rocks to expand and break. Then the expansion and contraction causes major rock formations to splinter which enables those to be picked up and carried great distances down stream. When the glacier recedes, it leaves pools of water and piles of rock, dirt and sand. These make up new hills and valleys to replace the ones destroyed as the glacier was forming. It takes millions of years for the glacier to do this work. However a flood from a backed up glacier can complete it in just a few hours! Thanks to gravity, the soil is always moving from the highest places to the lowest places which are then inducted under tetonic plates. This process takes millions of years. Then hot spots in the eaths crust birth volcano’s which in turn form new land
