1. Wind Most common in dry regions 2 main forms Deflation
Abrasion (sandblasting)

2. Deflation
Wind blows away small loose sediments

3. Sandblasting or Abrasion
Wind blows sand or silt grains against other rocks
More effective at lower heights
Results in an appearance that is
Frosted
Pitted

4. Erosion by Glaciers Glacier
Naturally formed mass of ice or snow that moves downhill due to gravity

5. Types of Glaciers
Mountain Glaciers
Continental Glaciers

6. Glacial Movement Glacial advance Glacial retreat
More snow & ice accumulate than melt
Glacial retreat
Melting occurs faster than the snow & ice are added

7. Characteristics of Glacial Erosion
Grooves and scratches in the rock
Erratics
Large sediment that seem out of place

8. U-Shaped Valleys
Rocky River, Jasper National Park, Alberta.

9. Glacial Landscape Features
Horn
Cirque
Bowl-shaped Basins

10. Matterhorn

11. Waves and Current Erosion
Waves are energy disturbances in water
Caused by:
Wind
Fetch
Distance the wind blows on the water

12. Longshore Current Waves hit the beach at an angle
Net result is movement of the sand in one direction

13. Jetties
Structures built to slow sand movement

14. Shoreline Erosion
Breakwater
Built to try and slow erosion

15. Coastline Features
Barrier Beach
Spit
Extension of sand

16. Human Causes of Erosion
Construction
Mining
Deforestation
Overgrazing
Poor farming methods