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What is the most accurate physical difference between dew and frost?

Answer and explanation

Correct answer: Dew is liquid droplets and frost is ice crystals

Dew and frost are both forms of moisture deposited near the surface, but they differ in physical state. Dew consists of liquid water droplets that form when a surface cools enough for vapour to condense while the surface remains above freezing. Frost consists of solid ice crystals or a frozen deposit that forms when the surface is at or below freezing. Thus, the visible appearance and the phase of water provide the most accurate distinction. Both require suitable moisture and cooling, but they are not identical substances.

Option D is correct because it identifies dew as liquid droplets and frost as ice crystals. Option A is incorrect because these forms commonly develop on cool surfaces, not only in high clouds. Option B reverses their states. Option C is too limited: they do not require rainfall immediately beforehand and can form from atmospheric moisture. The key is the state change—condensation produces liquid dew, while freezing or deposition produces solid frost.

Related tags

GeographyDewFrostState-Change

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