Question

If condensation occurs closer to the earth’s surface, what types of forms become visible?

Answer 1

If condensation and solidification of the water vapour in the atmosphere closer to the earth's surface are visible, they are in the form of fog, dew or frost.

1. Fog:
   • The temperature of the layers of the air near the surface of the earth reduces. As the temperature reduces, water vapour condenses.
   • In this process the water vapour turns into microscopic water particles and floats in the air.
   • When the density of these droplets in the air increases it leads to the formation of fog.
2. Dew:
   • When moisture-laden air near the earth's surface comes in contact with very cold objects condensation of water vapour takes place.
   • They turn into very small water droplets and stick to the surface of cold objects, e.g., leaves and this is called dew.
3. Frost:
   • When the temperature of the air reaches less than 0°C, the water droplet stuck to the surface of the cold objects and freezes.
   • This frozen water droplet is called frost.