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How do Glaciers change the earth’s surface? BY MRS. J
Overview GlaciersWeathering and Erosion Effects Deposition Effects
Glaciers Compressed snow layers Cold year-round: advance, retreat Moved by gravity and pick up sediment Ice mass moves slowly (1-2 in./day) Changed land surface over many years
Weathering Effects Weathering Rocks broken into smaller pieces Ice crushes rocks into sediment Rocks grind other rocks Effects Glacial Striations = long scratches Glacial Polish = flatten and shine rocks
Erosion Effects Erosion Pluck rocks and pick up sediment Carry sediment downhill Effects Horns = ice carves out sides of peak Missing sediment = empty space U-Shaped valleys = half-pipe shape
Deposition Effects Deposition Relocates sediment and rocks Effects Moraines = piles of rocks or sediment Kettles: ice fills area and melts Erratic: material different from things around it
Conclusion GlaciersWeathering and Erosion Effects Deposition Effects
Images Cited Diagram - http://i724.photobucket.com/albums/ww245/MohsinShah11/Geography %20Diagrams/Glaciers-Moraine.png http://i724.photobucket.com/albums/ww245/MohsinShah11/Geography %20Diagrams/Glaciers-Moraine.png Glacier Diagram http://i724.photobucket.com/albums/ww245/MohsinShah11/Geography %20Diagrams/Glaciers-Moraine.png http://i724.photobucket.com/albums/ww245/MohsinShah11/Geography %20Diagrams/Glaciers-Moraine.png
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