You all must have heard of a cyclone or saw on tv news channels that a cyclone is coming. But do you ever think about how they are formed? And when & where most tremendous cyclones came? Here we are going to discuss this in detail.
What is Cyclone?
Cyclone means the motion of air in a cyclic pattern. They are always formed in tropical regions because sunlight falls directly on the earth. Direct falling sunlight increases the temperature of this region.
What happens in Cyclones?
A low-pressure region is formed on the surface of the sea. This is due to falling sunlight increases the air temperature and that hot air goes above and the cold air is left on the ground. Now when a low-pressure region is formed, the nearby air in the high-pressure region tries to come into the low-pressure region.
But here is a question, the air transfer should be in a straight line but why it becomes cyclic?
This is due to the axial motion of our earth which generates Coriolis force. Air in the tropical region, in pole region, and axial motion of earth all together generates cyclic motion of air forming Cyclone.
Moisture is one of the reasons cyclones becoming stronger. Because moisture on heating goes up and converts into water drops and releases heat which results in more pressure drops. And hence this cycle keeps working.
How do Cyclones stops?
As we know moisture is one of the reasons for continuing the cyclones, lack of this will decrease the power of the cyclones. Moisture is mostly found on the sea surface but when it moves towards the edge of the sea moisture decreases and hence the power of cyclones. But by the time it ends it already destructs the land area. Cyclones touching the land area are known as the Landfall of the cyclone.
When and where most powerful cyclone occurred?
In 1970, “Hola” was the most powerful cyclone on the history of the earth which results in the loss of almost 5 lacs lives in Bangladesh. Hola has a wind speed of 185 kmph.
It is also supposed that increasing global warming can increase the size of cyclones in the future.