90Grade 6th , 7th, 8th
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Types of Erosion
•Glaciers (frozen water) can cause erosion - they pluck and abrade. Plucking takes place by water entering cracks under the glacier, freezing, and breaking off pieces of rock that are then transported by the glacier. Abrasion cuts into the rock under the glacier, scooping rock up like a bulldozer and smoothing and polishing the rock surface
Image Depicting Glacier in Ice Fields Parkway, Canada
http://www.ngdc.noaa.gov/seg/hazard/slideset/24/24_slides.shtml