Question

What is a cyclone ?

• A. A large scale air mass that rotates around a strong centre of low atmospheric pressure.
• B. An overflow of a large amount of water beyond its normal limits
• C. A storm with thunder and lightning and accompanied by heavy rainfall..
• D. A severe snowstorm with high winds

Answer 1

Answer: (A)

A cyclone is a large scale air mass that rotates around a strong centre of low atmospheric pressure.

The centre of a cyclone is a calm area. It is called the eye of the storm. It is a region free of clouds and has light winds. Around this calm and clear eye, there is a cloud region of about $150km$ in size. In this region there are high-speed winds $(150–250km/h)$ and thick clouds with heavy rain. Away from this region the wind speed gradually decreases.