Describe dew point and fog formation.

Description should include the following concepts:

  • Fog is a cloud that is on the surface.
  • Fog typically occurs when the temperature of air near the ground is cooled to the air’s dew point. Water vapor in the air then condenses and becomes visible.
  • Fog is classified according to the way it forms and is dependent on the current temperature and the amount of water vapor in the air.

PLT226, PLT263, and PLT512

Process/Skill Questions:

  • What is dew point?