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If there is dew in a field in the morning but visibility is normal, which conclusion is correct?

Answer and explanation

Correct answer: Condensation occurred on surfaces, not as dense fog in the air

Correct answer: A. Dew is condensation that appears as liquid droplets directly on cool surfaces such as grass, leaves, or soil. Fog, in contrast, consists of droplets suspended in the air near the ground and usually reduces visibility. Therefore, dew can be present in a field even when the air remains clear enough for normal visibility. Option A is correct because it distinguishes the place of condensation: on surfaces rather than as a dense cloud of droplets in the air. Option B is wrong because water vapour must have been present for dew to form. Option C is wrong because dew and fog are related condensation processes but are not always the same event or location. Option D is wrong because normal visibility and the word dew do not prove that temperatures were at or below freezing; frost requires ice formation. Memory cue: ask “Where are the droplets?” On the surface means dew; suspended in air with reduced visibility means fog.

Related tags

DewFogFieldVisibilityCondensationForms Of Condensation: DewFrostAnd MistForms Of Condensation Dew Frost Fog And MistWater In The Atmosphere

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