Question

The water vapour condenses around the fine dust particles in the atmosphere are called :

• A. cloud droplets
• B. aerosols
• C. raindrops
• D. ice crystals

Answer 1

Answer:

B. aerosols

Condensation

• The process by which water vapour cools down to liquid state is called condensation. The water vapour from the earth, on reaching the atmosphere, condenses to form fine droplets of water. As the atmospheric temperature falls, the rate of condensation increases.

• The water vapour condenses around the fine dust particles in the atmosphere are called aerosols. The concentration of these water droplets leads to the formation of clouds.

• Clouds are not the only form of condensation. Fog, dew, etc. Are its other forms.

• The form of condensation where fine water droplets remain suspended like smoke over the valleys and water bodies is called fog. In cool mornings, condensed water droplets can be found on grass blades and other cold surfaces. This is called dew