Weathering of Rocks and pH

Physical Weathering

1. Using the Internet locate and paste a couple of pictures of Physical (Mechanical) Weathering Ice Wedging is taking place. Please explain how and why this type of weathering happens? And what are the necessary factors?
2. Locate and place below a couple of pictures picture of Physical Weathering where sheeting (exfoliation) has been the primary factor in the Weathering process. What causes this type of weathering? What rocks are commonly involved? Also watch this video. It is amazing!
3. Locate and place below a couple of pictures of Physical Weathering where thermal expansion has been the primary factor in the Weathering process – What causes this weathering?
4. Locate and place below a couple of pictures of physical weathering, where the abrasion has been the primary factor– What causes this weathering?