Final answer:
Glaciers change the land through erosion, deposition, and weathering. They scrape and scour the surface, creating landforms such as arêtes and U-shaped valleys. Glaciers also deposit materials, forming features like lateral moraines.
Step-by-step explanation:
Glaciers change the land through various processes such as erosion, deposition, and weathering.
Erosion:
Glaciers erode the land by scraping and scouring the surface as they move. They pick up loose rocks, debris, and soil, wearing away the land and creating landforms like arêtes and U-shaped valleys.
Deposition:
As glaciers move, they can deposit the materials they carry, forming features such as lateral moraines. Lateral moraines are sharp, steep rocky ridges formed by the deposition of rocks and soil along the sides of a glacier.
Weathering:
Glaciers also contribute to weathering by freezing and expanding in cracks and crevices of rocks. This freeze-thaw action weakens the rocks, causing them to break apart over time.
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