Question

What are the major classifications of clouds based on their physical forms?

1. Cirrus clouds
2. Stratus clouds
3. Cumulus clouds
4. Nimbus clouds

• A. i only
• B. i, iv
• C. ii, iii
• D. All of these

Answer 1

Answer:

D. All of these

Clouds

• Cloud is formed by the condensation of water vapour around the fine dust particles in the atmosphere. The water droplets so formed are less than 0.001 cm in dimension.

• Cirrus clouds: These are feather – like clouds in the upper atmosphere in clear weather conditions.

• Stratus clouds: These appear in thick layers in the lower part of the sky.

• Cumulus clouds: These clouds resemble huge cotton bundles and are formed due to strong convection currents.They have large vertical extent.

• Nimbus clouds: These are dark rain clouds in the lower atmosphere. These clouds appear dark as it does not allow sunlight to pass through due to thick concentration of water droplets.