• Clouds form when water vapor condenses around particles in the air.
  • Three main types of clouds are cirrus, stratus, and cumulus.
  • Thick clouds block some of the Sun’s rays during the day.
  • At night, thick clouds prevent heat from radiating out into space.
  • This keeps the surface warmer than it would be on a clear day.
  • Clouds trap heat in the atmosphere at night.
  • Clouds that form on the ground are called fog.
  • clouds that form in the mid troposphere are called altocumulus.
Select from the frequently asked questions below