Olympiad Test: Winds Storms & Cyclones - UPSC MCQ

The First Stage warning Pre Cyclone Watch, issued 72 hours in advance. It contains an early warning about the development of a cyclonic disturbance in the north Indian Ocean, its likely intensification into a tropical cyclone and the coastal belt likely to experience adverse weather.

There exists a negative relation between pressure and temperature. When temperature increases pressure will fall and vice versa. That is why, pressure increases from equatorial region towards the polar region.

In coastal areas cyclone is followed by flood. The water bring about by the high velocity wind cause flood.

Reduced air pressure cause increased wind speed. The air surrounding the low pressure area moves toward the low pressure to cause increased wind speed.

Warm air is lighter than cold air. Lighter air moves upward to create low pressure area.

Air expands on heating and condenses on cooling due to gaining kinetic energy.

Rapid expansion of air due to lightening cause thunder. Lightening occurs when two charged clouds come in contact of each other.

Which part of India is generally not affected by cyclones?
Answer: Northern region
Explanation:
The northern region of India is generally not affected by cyclones due to the following reasons:
- Geographical Location: The northern region of India, which includes states like Jammu and Kashmir, Himachal Pradesh, Punjab, Haryana, and Delhi, is situated far away from the coastal areas.
- Distance from Bay of Bengal and Arabian Sea: Cyclones primarily form over the Bay of Bengal and the Arabian Sea. The northern region is located at a considerable distance from these two major water bodies, reducing the likelihood of cyclone formation and impact.
- Shielded by the Himalayas: The Himalayan mountain range acts as a barrier, shielding the northern region from the direct impact of cyclones coming from the east or southeast.
- Weather Patterns: The weather patterns in the northern region are influenced more by the continental climate rather than the tropical climate, which is more conducive to cyclone formation.
It is important to note that while the northern region is generally not affected by cyclones, it may still experience their indirect effects such as rainfall and gusty winds when cyclones move towards neighboring regions.

Wind air is generated due to uneven heating of earth. More heated area develop low pressure and than other and air blows from high pressure to low pressure.

High speed wind can be destructive due to large amount of kinetic energy associate with it to uproot trees and buildings.

Sudden occurrence of light due to friction of clouds is called lightening. It occurs due to interaction between two charged clouds.

Wind speed results in storm which can be highly destructive. High speed wind can uproot the tree and destroy the buildings.

During flood, contamination of water causes shortage of drinking water as water bodies get contaminated with harmful substances.

Hot airs are lighter and move upwards, for escape of hot air from the room, ventilators are provided just beneath the roof in the walls.

Building can be protected from lightening by using lightening rod at the top of building to carry the charge of lightening to the ground.

Violent storms accompanied by high wind speed is called cyclone. It brings heavy rain along with high velocity wind to cause destruction.

The eye of storm is a calm area around which wind blows very rapidly.

Cold air is heavier than warm air and moves down ward. Hot air moves upward.

Humidity in air is maximum in monsoon season, because lots of raining occurs during this period of time.

The rows of trees grown along the coastal areas to reduce the impact of cyclone are known as mangroves as it breaks the wind speed to reduce the pressure.