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Multiple Choice Questions

Which of the following factors help in the formation of fog over the sea 1 Tropical winds passing ov...........

Geography and Environment (HCS) World climates

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Which of the following factors help in the formation of fog over the sea?

1. Tropical winds passing over cooler waters

2. Presence of condensation nuclei in the form of Ocean salt

Which of the above is/are correct?

1 only

2 only

Both 1 and 2

None of the above

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Explanation:

Statement 1: When wind blows moist air over a cool surface the air will cool and advection fog will form. Advection fog is very common at sea when tropical winds pass over cooler waters and on land when a warm front passes over heavy snow.

Statement 2: Sea fog forms when the condensation nuclei is salt. Salt is, of course, very common near the ocean where it is kicked up into the atmosphere by the breaking waves. Salt is a unique condensation nuclei in that it will allow fog to form when the humidity is as low as 70%.

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