Question

multiple select question
select all that apply
which factors affect mechanical weathering?
□ temperature
□ pressure
□ density

Explanation:

Mechanical weathering is the physical breakdown of rocks. Temperature changes (e.g., thermal expansion and contraction) and pressure changes (e.g., unloading pressure) affect it. Density is not a direct factor for mechanical weathering. So temperature and pressure are correct.

Answer:

• temperature (the checkbox next to "temperature" should be selected)
• pressure (the checkbox next to "pressure" should be selected)