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Why can fog droplets remain suspended in air?

Answer and explanation

Correct answer: Because they are very small and fall slowly

Answer: B. Fog consists of extremely small water droplets suspended near the ground. Their small size gives them a very low falling speed, while air movement and turbulence can keep them dispersed for a time. Gravity still acts on them, but the droplets descend so slowly that they appear to float. A is wrong because large, heavy drops fall more quickly and are more like rain drops. C is wrong because gravity acts on every water droplet; suspension does not mean gravity disappears. D is wrong because ordinary fog droplets are made of condensed water. Memory cue: tiny droplets fall slowly, so fog stays in the air; larger drops fall as rain.

Related tags

FogDropletsSuspensionGravityForms Of Condensation: DewFrostAnd MistForms Of Condensation Dew Frost Fog And MistWater In The AtmosphereGeography

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