Question

Statement 1: The swift movement of the falling water droplets along with the rising hot air in the atmosphere creates lightning and a sound called thunderstorm.
Statement 2: Thunderstorms can become cyclones when temperatures are extremely high and air pressures are extremely low.

• A. Both statements are incorrect.
  
• B. Both statements are correct.
  
• C. Statement 2 is correct but statement 1 is incorrect.
  
• D. Statement 1 is correct but statement 2 is incorrect.
  

Answer 1

The correct option is B Both statements are correct.


Thunderstorms develop in hot, humid tropical areas like India very frequently. The rising temperatures produce strong upward rising winds. These winds carry water droplets upwards, where they freeze, and fall down again. The swift movement of the falling water droplets along with the rising air create lightning and sound. It is this event that we call a thunderstorm.

Before cloud formation, water takes up heat from the atmosphere to change into vapour. When water vapour changes back to liquid form as raindrops, this heat is released to the atmosphere. The heat released to the atmosphere warms the air around. The air tends to rise and causes a drop in pressure. More air rushes to the centre of the storm. This cycle is repeated. The chain of events ends with the formation of a very low-pressure system with very high-speed winds revolving around it. It is this weather condition that we call a cyclone. Hence, thunderstorms can become cyclones when temperatures are extremely high and air pressures are extremely low.