Answer to Question #107375 in Physics for Nyx

Question

Why are icebergs often surrounded by fog?
1. The air is dryer near an iceberg.
2. An iceberg attracts vapor from the surrounding air.
3. The evaporation from an iceberg condenses into droplets (fog).
4. The chilled air in the vicinity of an iceberg
results in condensation of water vapor in the
air (fog).

Answer 1

The icebergs are frozen and very cold and so they have a chilling effect onthe surrounding air. (Air cools by conduction of heat from air to iceberg; small amount of ice may melt and evaporate into the atmosphere.) If the air is cooled to the dewpoint temperature, a fog will form (condensation takes place). 

Answer: 4. The chilled air in the vicinity of an iceberg results in condensation of water vapor in the air (fog).