In a Fog Fog is a fact of life along the coast. It is especially common in the spring and fall or any time that there is a significant difference between water and air temperature.
Fog is a cloud that touches the ground or the surface of a body of water.
As air cools, water vapor suspended in the atmosphere condenses into water droplets, usually around minute particles of ash, dust, or even sea salt. Find out how fog is formed. Fill one third of the jar with colored warm water. Have the bag of ice and matches nearby. Light the match and hold it over the jar opening.