Which colour of light is scattered the MOST by fine particles in the earth's atmosphere?
Generated by claude-sonnet-4-6 · 2026-06-26 01:07 · grounding rag
Model Answer
Answer: D — Blue
Blue light has the shortest wavelength in visible light, so fine atmospheric particles scatter it most strongly. This is why the clear sky appears blue.
Source: Chapter 10, Section 10.6.2
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Explanation
- The key principle: shorter wavelength = more scattering by fine particles.
- Blue has the shortest wavelength among the options; red has the longest and is scattered the least (hence used for danger signals).
- For a 1-mark MCQ, just state the correct option and one supporting reason — no need for elaboration.