Question

Mechanical weathering is caused by _____________.

• A. Plants and animals
• B. Solution action of water
• C. Temperature changes
• D. Earthquakes

Answer 1

The correct option is C Temperature changes

Ice wedging, pressure release, plant root growth, and abrasion can all cause mechanical weathering. In the cracks and pores of rocks, the force of its expansion is strong enough to split the rocks apart. This release of pressure causes the rock to expand. As the rock expands, cracks form in it, leading to exfoliation.

The correct answer is C.