Singapore GCE A-Level H2 Geography Practice Questions - Singapore GCE A-Level H2 Geography (SEAB Syllabus 9173) Exam

Why does chemical weathering dominate over physical weathering in humid tropical climates such as Singapore?

High year-round temperatures and abundant rainfall accelerate chemical reaction rates and mineral decomposition Frequent freeze-thaw cycles on mountain slopes fracture parent rock rapidly High solar radiation causes extreme daily thermal expansion and contraction of granite rock Low soil organic acid concentrations prevent biological weathering mechanisms

Correct Answer:

High year-round temperatures and abundant rainfall accelerate chemical reaction rates and mineral decomposition

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