1. How do Glaciers change the earth’s surface?
By Mrs. J

2. Weathering and Erosion Effects
Overview
Glaciers
Weathering and Erosion Effects
Deposition Effects

3. 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

4. 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

5. 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

6. 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

7. Weathering and Erosion Effects
Conclusion
Glaciers
Weathering and Erosion Effects
Deposition Effects

8. Final Thought

9. Images Cited
Diagram - %20Diagrams/Glaciers-Moraine.png
Glacier Diagram %20Diagrams/Glaciers-Moraine.png