Which of the following is a means of mechanical weathering?
A) frost wedging
B) pressure release
C) thermal expansion and contraction
D) burrowing and root wedging
E) all of these

Question

Quizplus · Accepted Answer

All of the options listed are means of mechanical weathering. 
- Frost wedging occurs when water enters cracks in rocks, freezes, and expands, causing the crack to widen and weaken the rock. 
- Pressure release occurs when overlying material is eroded away, reducing pressure on the underlying rock and causing it to expand and fracture. 
- Thermal expansion and contraction occurs when rocks are subjected to temperature changes, causing them to expand and contract and potentially crack. 
- Burrowing and root wedging occurs when plants and animals dig into and push against rocks, causing them to weaken and break apart.

Which of the Following Is a Means of Mechanical Weathering