Question
Clouds float in the atmosphere on account of their
- low viscosity
- low density
- low temperature
- creation of low pressure
Answer
low density
Explanation
Clouds are formed when warm, moist air rises and cools, causing the water vapour in the air to condense into liquid droplets or ice crystals. These droplets or crystals are much denser than the surrounding air, which makes them fall towards the ground due to gravity.