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SubjectsGeography
तड़ितझंझा और बवंडर
In Class 11 Geography, this topic explains how thunderstorms and tornadoes develop within atmospheric circulation and weather systems. Students learn how uneven heating creates convection, rising moist air forms towering clouds, and instability, pressure differences, wind shear, and condensation intensify storms. The topic also distinguishes thunderstorms from tornadoes, describes their structure and life cycle, and examines associated hazards such as lightning, heavy rain, hail, strong winds, and sudden changes in weather.
Easy · Level 8 · 5 questions
TOPIC PRACTICE
Up to 5 questions from this page. Select your focus, then start.
In an open field there may be no taller object nearby, so a standing person can become one of the highest points available for a lightning discharge. Lightning does not need a person to be the tallest object, but exposure increases risk. The safest response is to enter a substantial building or enclosed hard-topped vehicle and avoid isolated trees, fences, and elevated ground.
The safest location in an ordinary house is a small interior room, basement, or storm shelter on the lowest possible floor. It should be away from windows, glass, exterior walls, and large rooms with wide roofs because these areas are more exposed to flying debris and structural failure. Covering the head and neck further reduces injury risk. Thus option D is correct.
The intense winds of a tornado can break buildings, trees, vehicles, roofing, and other objects into fragments. These fragments are accelerated and thrown through the air at dangerous speeds, causing many serious injuries and deaths. For this reason, flying debris is usually the greatest immediate direct danger. People should shelter in a low interior space, protect the head and neck, and stay away from windows.
Lightning and thunder are produced almost together, but they reach an observer at very different speeds. Light travels through air at roughly 300,000 kilometres per second, whereas sound travels at about 0.34 kilometres per second. Therefore the flash is seen first and the thunder arrives later.
An isolated tall tree can act as a prominent path for a lightning discharge, and a person standing beneath it may be injured by a direct strike, side flash, or current spreading through the ground. Lightning can strike people and objects, not only metal, and danger may continue after rain stops. Thus, option A is correct.
QUIZ COMPLETE
