Question

_______ are feathery fibrous clouds which form at very high levels of 5 to 10 km.

• A. Cumulus clouds
• B. Stratus clouds
• C. Cirrus clouds
• D. Nimbus clouds

Answer 1

The correct option is C Cirrus clouds

• Cumulus clouds- these have a wool-like appearance. They are generally formed at a height of 4-7km. They exist in patches and have a flat base.
• Stratus clouds - these are layered clouds covering large portions of the sky. These clouds are generally formed either due to loss of heat or the mixing of air masses with different temperatures.
• Cirrus clouds- clouds are formed at high altitudes of 5- 12km. They are thin and detached clouds having a feathery appearance. They are always white.
• Nimbus clouds- these are black or dark gray. They form at middle levels or very near to the surface of the earth. These are extremely dense and opaque to the rays of the sun.