Exposure of rock to the changes of temperature is the cause of ________
A
Biological weathering
B
Chemical weathering
C
Degradational weathering
D
Mechanical weathering
Correct Answer: Mechanical weathering
Exposure of rock to the changes of temperature is the cause of Mechanical weathering. Temperature changes can also contribute to mechanical weathering in a process called thermal stress. Changes in temperature cause rock to expand (with heat) and contract (with cold). As this happens over and over again, the structure of the rock weakens.